author | prr |
Sat, 19 Sep 2015 15:45:59 -0700 | |
changeset 32865 | f9cb6e427f9e |
parent 25859 | 3317bb8137f4 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.swing.text.html; |
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import java.awt.*; |
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import java.util.BitSet; |
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import java.util.Vector; |
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import java.util.Arrays; |
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import javax.swing.SizeRequirements; |
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import javax.swing.event.DocumentEvent; |
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import javax.swing.text.*; |
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/** |
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* HTML table view. |
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* |
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* @author Timothy Prinzing |
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* @see View |
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*/ |
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/*public*/ class TableView extends BoxView implements ViewFactory { |
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||
44 |
/** |
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* Constructs a TableView for the given element. |
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* |
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* @param elem the element that this view is responsible for |
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*/ |
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public TableView(Element elem) { |
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super(elem, View.Y_AXIS); |
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rows = new Vector<RowView>(); |
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gridValid = false; |
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captionIndex = -1; |
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totalColumnRequirements = new SizeRequirements(); |
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} |
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57 |
/** |
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* Creates a new table row. |
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* |
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* @param elem an element |
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* @return the row |
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*/ |
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protected RowView createTableRow(Element elem) { |
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// PENDING(prinz) need to add support for some of the other |
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// elements, but for now just ignore anything that is not |
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// a TR. |
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Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute); |
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if (o == HTML.Tag.TR) { |
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return new RowView(elem); |
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} |
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return null; |
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} |
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/** |
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* The number of columns in the table. |
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*/ |
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public int getColumnCount() { |
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return columnSpans.length; |
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} |
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/** |
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* Fetches the span (width) of the given column. |
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* This is used by the nested cells to query the |
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* sizes of grid locations outside of themselves. |
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*/ |
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public int getColumnSpan(int col) { |
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if (col < columnSpans.length) { |
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return columnSpans[col]; |
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} |
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return 0; |
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} |
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/** |
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* The number of rows in the table. |
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*/ |
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public int getRowCount() { |
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return rows.size(); |
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} |
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/** |
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* Fetch the span of multiple rows. This includes |
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* the border area. |
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*/ |
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public int getMultiRowSpan(int row0, int row1) { |
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RowView rv0 = getRow(row0); |
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RowView rv1 = getRow(row1); |
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if ((rv0 != null) && (rv1 != null)) { |
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int index0 = rv0.viewIndex; |
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int index1 = rv1.viewIndex; |
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int span = getOffset(Y_AXIS, index1) - getOffset(Y_AXIS, index0) + |
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getSpan(Y_AXIS, index1); |
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return span; |
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} |
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return 0; |
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} |
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/** |
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* Fetches the span (height) of the given row. |
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*/ |
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public int getRowSpan(int row) { |
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RowView rv = getRow(row); |
|
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if (rv != null) { |
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return getSpan(Y_AXIS, rv.viewIndex); |
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} |
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return 0; |
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} |
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RowView getRow(int row) { |
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if (row < rows.size()) { |
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return rows.elementAt(row); |
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} |
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return null; |
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} |
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135 |
protected View getViewAtPoint(int x, int y, Rectangle alloc) { |
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int n = getViewCount(); |
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View v; |
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Rectangle allocation = new Rectangle(); |
139 |
for (int i = 0; i < n; i++) { |
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allocation.setBounds(alloc); |
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childAllocation(i, allocation); |
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v = getView(i); |
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if (v instanceof RowView) { |
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v = ((RowView)v).findViewAtPoint(x, y, allocation); |
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if (v != null) { |
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alloc.setBounds(allocation); |
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return v; |
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} |
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149 |
} |
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} |
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return super.getViewAtPoint(x, y, alloc); |
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} |
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154 |
/** |
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155 |
* Determines the number of columns occupied by |
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* the table cell represented by given element. |
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*/ |
|
158 |
protected int getColumnsOccupied(View v) { |
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AttributeSet a = v.getElement().getAttributes(); |
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161 |
if (a.isDefined(HTML.Attribute.COLSPAN)) { |
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162 |
String s = (String) a.getAttribute(HTML.Attribute.COLSPAN); |
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163 |
if (s != null) { |
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164 |
try { |
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165 |
return Integer.parseInt(s); |
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166 |
} catch (NumberFormatException nfe) { |
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167 |
// fall through to one column |
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} |
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} |
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} |
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171 |
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return 1; |
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173 |
} |
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174 |
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175 |
/** |
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176 |
* Determines the number of rows occupied by |
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* the table cell represented by given element. |
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*/ |
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179 |
protected int getRowsOccupied(View v) { |
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AttributeSet a = v.getElement().getAttributes(); |
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181 |
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182 |
if (a.isDefined(HTML.Attribute.ROWSPAN)) { |
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183 |
String s = (String) a.getAttribute(HTML.Attribute.ROWSPAN); |
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184 |
if (s != null) { |
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try { |
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186 |
return Integer.parseInt(s); |
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187 |
} catch (NumberFormatException nfe) { |
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// fall through to one row |
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189 |
} |
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190 |
} |
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191 |
} |
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192 |
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193 |
return 1; |
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194 |
} |
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195 |
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196 |
protected void invalidateGrid() { |
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197 |
gridValid = false; |
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198 |
} |
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199 |
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200 |
protected StyleSheet getStyleSheet() { |
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201 |
HTMLDocument doc = (HTMLDocument) getDocument(); |
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return doc.getStyleSheet(); |
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203 |
} |
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205 |
/** |
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206 |
* Update the insets, which contain the caption if there |
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* is a caption. |
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208 |
*/ |
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209 |
void updateInsets() { |
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210 |
short top = (short) painter.getInset(TOP, this); |
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short bottom = (short) painter.getInset(BOTTOM, this); |
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if (captionIndex != -1) { |
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View caption = getView(captionIndex); |
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short h = (short) caption.getPreferredSpan(Y_AXIS); |
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AttributeSet a = caption.getAttributes(); |
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Object align = a.getAttribute(CSS.Attribute.CAPTION_SIDE); |
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if ((align != null) && (align.equals("bottom"))) { |
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bottom += h; |
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} else { |
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top += h; |
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} |
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} |
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setInsets(top, (short) painter.getInset(LEFT, this), |
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bottom, (short) painter.getInset(RIGHT, this)); |
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} |
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226 |
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227 |
/** |
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228 |
* Update any cached values that come from attributes. |
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229 |
*/ |
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230 |
protected void setPropertiesFromAttributes() { |
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StyleSheet sheet = getStyleSheet(); |
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232 |
attr = sheet.getViewAttributes(this); |
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painter = sheet.getBoxPainter(attr); |
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234 |
if (attr != null) { |
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setInsets((short) painter.getInset(TOP, this), |
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(short) painter.getInset(LEFT, this), |
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(short) painter.getInset(BOTTOM, this), |
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(short) painter.getInset(RIGHT, this)); |
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239 |
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240 |
CSS.LengthValue lv = (CSS.LengthValue) |
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attr.getAttribute(CSS.Attribute.BORDER_SPACING); |
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242 |
if (lv != null) { |
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cellSpacing = (int) lv.getValue(); |
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} else { |
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// Default cell spacing equals 2 |
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cellSpacing = 2; |
2 | 247 |
} |
248 |
lv = (CSS.LengthValue) |
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249 |
attr.getAttribute(CSS.Attribute.BORDER_TOP_WIDTH); |
|
250 |
if (lv != null) { |
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251 |
borderWidth = (int) lv.getValue(); |
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252 |
} else { |
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253 |
borderWidth = 0; |
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254 |
} |
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} |
2 | 256 |
} |
257 |
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258 |
/** |
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259 |
* Fill in the grid locations that are placeholders |
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260 |
* for multi-column, multi-row, and missing grid |
|
261 |
* locations. |
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262 |
*/ |
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263 |
void updateGrid() { |
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264 |
if (! gridValid) { |
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265 |
relativeCells = false; |
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266 |
multiRowCells = false; |
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267 |
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268 |
// determine which views are table rows and clear out |
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269 |
// grid points marked filled. |
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270 |
captionIndex = -1; |
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271 |
rows.removeAllElements(); |
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272 |
int n = getViewCount(); |
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273 |
for (int i = 0; i < n; i++) { |
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274 |
View v = getView(i); |
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275 |
if (v instanceof RowView) { |
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276 |
rows.addElement((RowView) v); |
2 | 277 |
RowView rv = (RowView) v; |
278 |
rv.clearFilledColumns(); |
|
279 |
rv.rowIndex = rows.size() - 1; |
|
280 |
rv.viewIndex = i; |
|
281 |
} else { |
|
282 |
Object o = v.getElement().getAttributes().getAttribute(StyleConstants.NameAttribute); |
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283 |
if (o instanceof HTML.Tag) { |
|
284 |
HTML.Tag kind = (HTML.Tag) o; |
|
285 |
if (kind == HTML.Tag.CAPTION) { |
|
286 |
captionIndex = i; |
|
287 |
} |
|
288 |
} |
|
289 |
} |
|
290 |
} |
|
291 |
||
292 |
int maxColumns = 0; |
|
293 |
int nrows = rows.size(); |
|
294 |
for (int row = 0; row < nrows; row++) { |
|
295 |
RowView rv = getRow(row); |
|
296 |
int col = 0; |
|
297 |
for (int cell = 0; cell < rv.getViewCount(); cell++, col++) { |
|
298 |
View cv = rv.getView(cell); |
|
299 |
if (! relativeCells) { |
|
300 |
AttributeSet a = cv.getAttributes(); |
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301 |
CSS.LengthValue lv = (CSS.LengthValue) |
|
302 |
a.getAttribute(CSS.Attribute.WIDTH); |
|
303 |
if ((lv != null) && (lv.isPercentage())) { |
|
304 |
relativeCells = true; |
|
305 |
} |
|
306 |
} |
|
307 |
// advance to a free column |
|
308 |
for (; rv.isFilled(col); col++); |
|
309 |
int rowSpan = getRowsOccupied(cv); |
|
310 |
if (rowSpan > 1) { |
|
311 |
multiRowCells = true; |
|
312 |
} |
|
313 |
int colSpan = getColumnsOccupied(cv); |
|
314 |
if ((colSpan > 1) || (rowSpan > 1)) { |
|
315 |
// fill in the overflow entries for this cell |
|
316 |
int rowLimit = row + rowSpan; |
|
317 |
int colLimit = col + colSpan; |
|
318 |
for (int i = row; i < rowLimit; i++) { |
|
319 |
for (int j = col; j < colLimit; j++) { |
|
320 |
if (i != row || j != col) { |
|
321 |
addFill(i, j); |
|
322 |
} |
|
323 |
} |
|
324 |
} |
|
325 |
if (colSpan > 1) { |
|
326 |
col += colSpan - 1; |
|
327 |
} |
|
328 |
} |
|
329 |
} |
|
330 |
maxColumns = Math.max(maxColumns, col); |
|
331 |
} |
|
332 |
||
333 |
// setup the column layout/requirements |
|
334 |
columnSpans = new int[maxColumns]; |
|
335 |
columnOffsets = new int[maxColumns]; |
|
336 |
columnRequirements = new SizeRequirements[maxColumns]; |
|
337 |
for (int i = 0; i < maxColumns; i++) { |
|
338 |
columnRequirements[i] = new SizeRequirements(); |
|
339 |
columnRequirements[i].maximum = Integer.MAX_VALUE; |
|
340 |
} |
|
341 |
gridValid = true; |
|
342 |
} |
|
343 |
} |
|
344 |
||
345 |
/** |
|
346 |
* Mark a grid location as filled in for a cells overflow. |
|
347 |
*/ |
|
348 |
void addFill(int row, int col) { |
|
349 |
RowView rv = getRow(row); |
|
350 |
if (rv != null) { |
|
351 |
rv.fillColumn(col); |
|
352 |
} |
|
353 |
} |
|
354 |
||
355 |
/** |
|
356 |
* Layout the columns to fit within the given target span. |
|
357 |
* |
|
358 |
* @param targetSpan the given span for total of all the table |
|
359 |
* columns |
|
360 |
* @param reqs the requirements desired for each column. This |
|
361 |
* is the column maximum of the cells minimum, preferred, and |
|
362 |
* maximum requested span |
|
363 |
* @param spans the return value of how much to allocated to |
|
364 |
* each column |
|
365 |
* @param offsets the return value of the offset from the |
|
366 |
* origin for each column |
|
367 |
* @return the offset from the origin and the span for each column |
|
368 |
* in the offsets and spans parameters |
|
369 |
*/ |
|
370 |
protected void layoutColumns(int targetSpan, int[] offsets, int[] spans, |
|
371 |
SizeRequirements[] reqs) { |
|
372 |
//clean offsets and spans |
|
373 |
Arrays.fill(offsets, 0); |
|
374 |
Arrays.fill(spans, 0); |
|
375 |
colIterator.setLayoutArrays(offsets, spans, targetSpan); |
|
376 |
CSS.calculateTiledLayout(colIterator, targetSpan); |
|
377 |
} |
|
378 |
||
379 |
/** |
|
380 |
* Calculate the requirements for each column. The calculation |
|
381 |
* is done as two passes over the table. The table cells that |
|
382 |
* occupy a single column are scanned first to determine the |
|
383 |
* maximum of minimum, preferred, and maximum spans along the |
|
384 |
* give axis. Table cells that span multiple columns are excluded |
|
385 |
* from the first pass. A second pass is made to determine if |
|
386 |
* the cells that span multiple columns are satisfied. If the |
|
387 |
* column requirements are not satisified, the needs of the |
|
388 |
* multi-column cell is mixed into the existing column requirements. |
|
389 |
* The calculation of the multi-column distribution is based upon |
|
390 |
* the proportions of the existing column requirements and taking |
|
391 |
* into consideration any constraining maximums. |
|
392 |
*/ |
|
393 |
void calculateColumnRequirements(int axis) { |
|
394 |
// clean columnRequirements |
|
395 |
for (SizeRequirements req : columnRequirements) { |
|
396 |
req.minimum = 0; |
|
397 |
req.preferred = 0; |
|
398 |
req.maximum = Integer.MAX_VALUE; |
|
399 |
} |
|
400 |
Container host = getContainer(); |
|
401 |
if (host != null) { |
|
402 |
if (host instanceof JTextComponent) { |
|
403 |
skipComments = !((JTextComponent)host).isEditable(); |
|
404 |
} else { |
|
405 |
skipComments = true; |
|
406 |
} |
|
407 |
} |
|
408 |
// pass 1 - single column cells |
|
409 |
boolean hasMultiColumn = false; |
|
410 |
int nrows = getRowCount(); |
|
411 |
for (int i = 0; i < nrows; i++) { |
|
412 |
RowView row = getRow(i); |
|
413 |
int col = 0; |
|
414 |
int ncells = row.getViewCount(); |
|
415 |
for (int cell = 0; cell < ncells; cell++) { |
|
416 |
View cv = row.getView(cell); |
|
417 |
if (skipComments && !(cv instanceof CellView)) { |
|
418 |
continue; |
|
419 |
} |
|
420 |
for (; row.isFilled(col); col++); // advance to a free column |
|
421 |
int rowSpan = getRowsOccupied(cv); |
|
422 |
int colSpan = getColumnsOccupied(cv); |
|
423 |
if (colSpan == 1) { |
|
424 |
checkSingleColumnCell(axis, col, cv); |
|
425 |
} else { |
|
426 |
hasMultiColumn = true; |
|
427 |
col += colSpan - 1; |
|
428 |
} |
|
429 |
col++; |
|
430 |
} |
|
431 |
} |
|
432 |
||
433 |
// pass 2 - multi-column cells |
|
434 |
if (hasMultiColumn) { |
|
435 |
for (int i = 0; i < nrows; i++) { |
|
436 |
RowView row = getRow(i); |
|
437 |
int col = 0; |
|
438 |
int ncells = row.getViewCount(); |
|
439 |
for (int cell = 0; cell < ncells; cell++) { |
|
440 |
View cv = row.getView(cell); |
|
441 |
if (skipComments && !(cv instanceof CellView)) { |
|
442 |
continue; |
|
443 |
} |
|
444 |
for (; row.isFilled(col); col++); // advance to a free column |
|
445 |
int colSpan = getColumnsOccupied(cv); |
|
446 |
if (colSpan > 1) { |
|
447 |
checkMultiColumnCell(axis, col, colSpan, cv); |
|
448 |
col += colSpan - 1; |
|
449 |
} |
|
450 |
col++; |
|
451 |
} |
|
452 |
} |
|
453 |
} |
|
454 |
} |
|
455 |
||
456 |
/** |
|
457 |
* check the requirements of a table cell that spans a single column. |
|
458 |
*/ |
|
459 |
void checkSingleColumnCell(int axis, int col, View v) { |
|
460 |
SizeRequirements req = columnRequirements[col]; |
|
461 |
req.minimum = Math.max((int) v.getMinimumSpan(axis), req.minimum); |
|
462 |
req.preferred = Math.max((int) v.getPreferredSpan(axis), req.preferred); |
|
463 |
} |
|
464 |
||
465 |
/** |
|
466 |
* check the requirements of a table cell that spans multiple |
|
467 |
* columns. |
|
468 |
*/ |
|
469 |
void checkMultiColumnCell(int axis, int col, int ncols, View v) { |
|
470 |
// calculate the totals |
|
471 |
long min = 0; |
|
472 |
long pref = 0; |
|
473 |
long max = 0; |
|
474 |
for (int i = 0; i < ncols; i++) { |
|
475 |
SizeRequirements req = columnRequirements[col + i]; |
|
476 |
min += req.minimum; |
|
477 |
pref += req.preferred; |
|
478 |
max += req.maximum; |
|
479 |
} |
|
480 |
||
481 |
// check if the minimum size needs adjustment. |
|
482 |
int cmin = (int) v.getMinimumSpan(axis); |
|
483 |
if (cmin > min) { |
|
484 |
/* |
|
485 |
* the columns that this cell spans need adjustment to fit |
|
486 |
* this table cell.... calculate the adjustments. |
|
487 |
*/ |
|
488 |
SizeRequirements[] reqs = new SizeRequirements[ncols]; |
|
489 |
for (int i = 0; i < ncols; i++) { |
|
490 |
reqs[i] = columnRequirements[col + i]; |
|
491 |
} |
|
492 |
int[] spans = new int[ncols]; |
|
493 |
int[] offsets = new int[ncols]; |
|
494 |
SizeRequirements.calculateTiledPositions(cmin, null, reqs, |
|
495 |
offsets, spans); |
|
496 |
// apply the adjustments |
|
497 |
for (int i = 0; i < ncols; i++) { |
|
498 |
SizeRequirements req = reqs[i]; |
|
499 |
req.minimum = Math.max(spans[i], req.minimum); |
|
500 |
req.preferred = Math.max(req.minimum, req.preferred); |
|
501 |
req.maximum = Math.max(req.preferred, req.maximum); |
|
502 |
} |
|
503 |
} |
|
504 |
||
505 |
// check if the preferred size needs adjustment. |
|
506 |
int cpref = (int) v.getPreferredSpan(axis); |
|
507 |
if (cpref > pref) { |
|
508 |
/* |
|
509 |
* the columns that this cell spans need adjustment to fit |
|
510 |
* this table cell.... calculate the adjustments. |
|
511 |
*/ |
|
512 |
SizeRequirements[] reqs = new SizeRequirements[ncols]; |
|
513 |
for (int i = 0; i < ncols; i++) { |
|
514 |
reqs[i] = columnRequirements[col + i]; |
|
515 |
} |
|
516 |
int[] spans = new int[ncols]; |
|
517 |
int[] offsets = new int[ncols]; |
|
518 |
SizeRequirements.calculateTiledPositions(cpref, null, reqs, |
|
519 |
offsets, spans); |
|
520 |
// apply the adjustments |
|
521 |
for (int i = 0; i < ncols; i++) { |
|
522 |
SizeRequirements req = reqs[i]; |
|
523 |
req.preferred = Math.max(spans[i], req.preferred); |
|
524 |
req.maximum = Math.max(req.preferred, req.maximum); |
|
525 |
} |
|
526 |
} |
|
527 |
||
528 |
} |
|
529 |
||
530 |
// --- BoxView methods ----------------------------------------- |
|
531 |
||
532 |
/** |
|
533 |
* Calculate the requirements for the minor axis. This is called by |
|
534 |
* the superclass whenever the requirements need to be updated (i.e. |
|
535 |
* a preferenceChanged was messaged through this view). |
|
536 |
* <p> |
|
537 |
* This is implemented to calculate the requirements as the sum of the |
|
538 |
* requirements of the columns and then adjust it if the |
|
539 |
* CSS width or height attribute is specified and applicable to |
|
540 |
* the axis. |
|
541 |
*/ |
|
542 |
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
|
543 |
updateGrid(); |
|
544 |
||
545 |
// calculate column requirements for each column |
|
546 |
calculateColumnRequirements(axis); |
|
547 |
||
548 |
||
549 |
// the requirements are the sum of the columns. |
|
550 |
if (r == null) { |
|
551 |
r = new SizeRequirements(); |
|
552 |
} |
|
553 |
long min = 0; |
|
554 |
long pref = 0; |
|
555 |
int n = columnRequirements.length; |
|
556 |
for (int i = 0; i < n; i++) { |
|
557 |
SizeRequirements req = columnRequirements[i]; |
|
558 |
min += req.minimum; |
|
559 |
pref += req.preferred; |
|
560 |
} |
|
561 |
int adjust = (n + 1) * cellSpacing + 2 * borderWidth; |
|
562 |
min += adjust; |
|
563 |
pref += adjust; |
|
564 |
r.minimum = (int) min; |
|
565 |
r.preferred = (int) pref; |
|
566 |
r.maximum = (int) pref; |
|
567 |
||
568 |
||
569 |
AttributeSet attr = getAttributes(); |
|
570 |
CSS.LengthValue cssWidth = (CSS.LengthValue)attr.getAttribute( |
|
571 |
CSS.Attribute.WIDTH); |
|
572 |
||
573 |
if (BlockView.spanSetFromAttributes(axis, r, cssWidth, null)) { |
|
574 |
if (r.minimum < (int)min) { |
|
575 |
// The user has requested a smaller size than is needed to |
|
576 |
// show the table, override it. |
|
577 |
r.maximum = r.minimum = r.preferred = (int) min; |
|
578 |
} |
|
579 |
} |
|
580 |
totalColumnRequirements.minimum = r.minimum; |
|
581 |
totalColumnRequirements.preferred = r.preferred; |
|
582 |
totalColumnRequirements.maximum = r.maximum; |
|
583 |
||
584 |
// set the alignment |
|
585 |
Object o = attr.getAttribute(CSS.Attribute.TEXT_ALIGN); |
|
586 |
if (o != null) { |
|
587 |
// set horizontal alignment |
|
588 |
String ta = o.toString(); |
|
589 |
if (ta.equals("left")) { |
|
590 |
r.alignment = 0; |
|
591 |
} else if (ta.equals("center")) { |
|
592 |
r.alignment = 0.5f; |
|
593 |
} else if (ta.equals("right")) { |
|
594 |
r.alignment = 1; |
|
595 |
} else { |
|
596 |
r.alignment = 0; |
|
597 |
} |
|
598 |
} else { |
|
599 |
r.alignment = 0; |
|
600 |
} |
|
601 |
||
602 |
return r; |
|
603 |
} |
|
604 |
||
605 |
/** |
|
606 |
* Calculate the requirements for the major axis. This is called by |
|
607 |
* the superclass whenever the requirements need to be updated (i.e. |
|
608 |
* a preferenceChanged was messaged through this view). |
|
609 |
* <p> |
|
610 |
* This is implemented to provide the superclass behavior adjusted for |
|
611 |
* multi-row table cells. |
|
612 |
*/ |
|
613 |
protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) { |
|
614 |
updateInsets(); |
|
615 |
rowIterator.updateAdjustments(); |
|
616 |
r = CSS.calculateTiledRequirements(rowIterator, r); |
|
617 |
r.maximum = r.preferred; |
|
618 |
return r; |
|
619 |
} |
|
620 |
||
621 |
/** |
|
622 |
* Perform layout for the minor axis of the box (i.e. the |
|
21278 | 623 |
* axis orthogonal to the axis that it represents). The results |
2 | 624 |
* of the layout should be placed in the given arrays which represent |
625 |
* the allocations to the children along the minor axis. This |
|
626 |
* is called by the superclass whenever the layout needs to be |
|
627 |
* updated along the minor axis. |
|
628 |
* <p> |
|
629 |
* This is implemented to call the |
|
630 |
* <a href="#layoutColumns">layoutColumns</a> method, and then |
|
631 |
* forward to the superclass to actually carry out the layout |
|
632 |
* of the tables rows. |
|
633 |
* |
|
634 |
* @param targetSpan the total span given to the view, which |
|
21278 | 635 |
* would be used to layout the children |
2 | 636 |
* @param axis the axis being layed out |
637 |
* @param offsets the offsets from the origin of the view for |
|
638 |
* each of the child views. This is a return value and is |
|
639 |
* filled in by the implementation of this method |
|
640 |
* @param spans the span of each child view; this is a return |
|
641 |
* value and is filled in by the implementation of this method |
|
642 |
* @return the offset and span for each child view in the |
|
643 |
* offsets and spans parameters |
|
644 |
*/ |
|
645 |
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
646 |
// make grid is properly represented |
|
647 |
updateGrid(); |
|
648 |
||
649 |
// all of the row layouts are invalid, so mark them that way |
|
650 |
int n = getRowCount(); |
|
651 |
for (int i = 0; i < n; i++) { |
|
652 |
RowView row = getRow(i); |
|
653 |
row.layoutChanged(axis); |
|
654 |
} |
|
655 |
||
656 |
// calculate column spans |
|
657 |
layoutColumns(targetSpan, columnOffsets, columnSpans, columnRequirements); |
|
658 |
||
659 |
// continue normal layout |
|
660 |
super.layoutMinorAxis(targetSpan, axis, offsets, spans); |
|
661 |
} |
|
662 |
||
663 |
||
664 |
/** |
|
665 |
* Perform layout for the major axis of the box (i.e. the |
|
666 |
* axis that it represents). The results |
|
667 |
* of the layout should be placed in the given arrays which represent |
|
668 |
* the allocations to the children along the minor axis. This |
|
669 |
* is called by the superclass whenever the layout needs to be |
|
670 |
* updated along the minor axis. |
|
671 |
* <p> |
|
672 |
* This method is where the layout of the table rows within the |
|
673 |
* table takes place. This method is implemented to call the use |
|
674 |
* the RowIterator and the CSS collapsing tile to layout |
|
675 |
* with border spacing and border collapsing capabilities. |
|
676 |
* |
|
677 |
* @param targetSpan the total span given to the view, which |
|
21278 | 678 |
* would be used to layout the children |
2 | 679 |
* @param axis the axis being layed out |
680 |
* @param offsets the offsets from the origin of the view for |
|
681 |
* each of the child views; this is a return value and is |
|
682 |
* filled in by the implementation of this method |
|
683 |
* @param spans the span of each child view; this is a return |
|
684 |
* value and is filled in by the implementation of this method |
|
685 |
* @return the offset and span for each child view in the |
|
686 |
* offsets and spans parameters |
|
687 |
*/ |
|
688 |
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
689 |
rowIterator.setLayoutArrays(offsets, spans); |
|
690 |
CSS.calculateTiledLayout(rowIterator, targetSpan); |
|
691 |
||
692 |
if (captionIndex != -1) { |
|
693 |
// place the caption |
|
694 |
View caption = getView(captionIndex); |
|
695 |
int h = (int) caption.getPreferredSpan(Y_AXIS); |
|
696 |
spans[captionIndex] = h; |
|
697 |
short boxBottom = (short) painter.getInset(BOTTOM, this); |
|
698 |
if (boxBottom != getBottomInset()) { |
|
699 |
offsets[captionIndex] = targetSpan + boxBottom; |
|
700 |
} else { |
|
701 |
offsets[captionIndex] = - getTopInset(); |
|
702 |
} |
|
703 |
} |
|
704 |
} |
|
705 |
||
706 |
/** |
|
707 |
* Fetches the child view that represents the given position in |
|
708 |
* the model. This is implemented to walk through the children |
|
709 |
* looking for a range that contains the given position. In this |
|
710 |
* view the children do not necessarily have a one to one mapping |
|
711 |
* with the child elements. |
|
712 |
* |
|
713 |
* @param pos the search position >= 0 |
|
714 |
* @param a the allocation to the table on entry, and the |
|
715 |
* allocation of the view containing the position on exit |
|
716 |
* @return the view representing the given position, or |
|
717 |
* null if there isn't one |
|
718 |
*/ |
|
719 |
protected View getViewAtPosition(int pos, Rectangle a) { |
|
720 |
int n = getViewCount(); |
|
721 |
for (int i = 0; i < n; i++) { |
|
722 |
View v = getView(i); |
|
723 |
int p0 = v.getStartOffset(); |
|
724 |
int p1 = v.getEndOffset(); |
|
725 |
if ((pos >= p0) && (pos < p1)) { |
|
726 |
// it's in this view. |
|
727 |
if (a != null) { |
|
728 |
childAllocation(i, a); |
|
729 |
} |
|
730 |
return v; |
|
731 |
} |
|
732 |
} |
|
733 |
if (pos == getEndOffset()) { |
|
734 |
View v = getView(n - 1); |
|
735 |
if (a != null) { |
|
736 |
this.childAllocation(n - 1, a); |
|
737 |
} |
|
738 |
return v; |
|
739 |
} |
|
740 |
return null; |
|
741 |
} |
|
742 |
||
743 |
// --- View methods --------------------------------------------- |
|
744 |
||
745 |
/** |
|
746 |
* Fetches the attributes to use when rendering. This is |
|
747 |
* implemented to multiplex the attributes specified in the |
|
748 |
* model with a StyleSheet. |
|
749 |
*/ |
|
750 |
public AttributeSet getAttributes() { |
|
751 |
if (attr == null) { |
|
752 |
StyleSheet sheet = getStyleSheet(); |
|
753 |
attr = sheet.getViewAttributes(this); |
|
754 |
} |
|
755 |
return attr; |
|
756 |
} |
|
757 |
||
758 |
/** |
|
759 |
* Renders using the given rendering surface and area on that |
|
760 |
* surface. This is implemented to delegate to the css box |
|
761 |
* painter to paint the border and background prior to the |
|
762 |
* interior. The superclass culls rendering the children |
|
763 |
* that don't directly intersect the clip and the row may |
|
764 |
* have cells hanging from a row above in it. The table |
|
765 |
* does not use the superclass rendering behavior and instead |
|
766 |
* paints all of the rows and lets the rows cull those |
|
767 |
* cells not intersecting the clip region. |
|
768 |
* |
|
769 |
* @param g the rendering surface to use |
|
770 |
* @param allocation the allocated region to render into |
|
771 |
* @see View#paint |
|
772 |
*/ |
|
773 |
public void paint(Graphics g, Shape allocation) { |
|
774 |
// paint the border |
|
775 |
Rectangle a = allocation.getBounds(); |
|
776 |
setSize(a.width, a.height); |
|
777 |
if (captionIndex != -1) { |
|
778 |
// adjust the border for the caption |
|
779 |
short top = (short) painter.getInset(TOP, this); |
|
780 |
short bottom = (short) painter.getInset(BOTTOM, this); |
|
781 |
if (top != getTopInset()) { |
|
782 |
int h = getTopInset() - top; |
|
783 |
a.y += h; |
|
784 |
a.height -= h; |
|
785 |
} else { |
|
786 |
a.height -= getBottomInset() - bottom; |
|
787 |
} |
|
788 |
} |
|
789 |
painter.paint(g, a.x, a.y, a.width, a.height, this); |
|
790 |
// paint interior |
|
791 |
int n = getViewCount(); |
|
792 |
for (int i = 0; i < n; i++) { |
|
793 |
View v = getView(i); |
|
794 |
v.paint(g, getChildAllocation(i, allocation)); |
|
795 |
} |
|
796 |
//super.paint(g, a); |
|
797 |
} |
|
798 |
||
799 |
/** |
|
800 |
* Establishes the parent view for this view. This is |
|
801 |
* guaranteed to be called before any other methods if the |
|
802 |
* parent view is functioning properly. |
|
803 |
* <p> |
|
804 |
* This is implemented |
|
805 |
* to forward to the superclass as well as call the |
|
806 |
* <a href="#setPropertiesFromAttributes">setPropertiesFromAttributes</a> |
|
807 |
* method to set the paragraph properties from the css |
|
808 |
* attributes. The call is made at this time to ensure |
|
809 |
* the ability to resolve upward through the parents |
|
810 |
* view attributes. |
|
811 |
* |
|
812 |
* @param parent the new parent, or null if the view is |
|
813 |
* being removed from a parent it was previously added |
|
814 |
* to |
|
815 |
*/ |
|
816 |
public void setParent(View parent) { |
|
817 |
super.setParent(parent); |
|
818 |
if (parent != null) { |
|
819 |
setPropertiesFromAttributes(); |
|
820 |
} |
|
821 |
} |
|
822 |
||
823 |
/** |
|
824 |
* Fetches the ViewFactory implementation that is feeding |
|
825 |
* the view hierarchy. |
|
826 |
* This replaces the ViewFactory with an implementation that |
|
827 |
* calls through to the createTableRow and createTableCell |
|
828 |
* methods. If the element given to the factory isn't a |
|
829 |
* table row or cell, the request is delegated to the factory |
|
830 |
* produced by the superclass behavior. |
|
831 |
* |
|
832 |
* @return the factory, null if none |
|
833 |
*/ |
|
834 |
public ViewFactory getViewFactory() { |
|
835 |
return this; |
|
836 |
} |
|
837 |
||
838 |
/** |
|
839 |
* Gives notification that something was inserted into |
|
840 |
* the document in a location that this view is responsible for. |
|
841 |
* This replaces the ViewFactory with an implementation that |
|
842 |
* calls through to the createTableRow and createTableCell |
|
843 |
* methods. If the element given to the factory isn't a |
|
844 |
* table row or cell, the request is delegated to the factory |
|
845 |
* passed as an argument. |
|
846 |
* |
|
847 |
* @param e the change information from the associated document |
|
848 |
* @param a the current allocation of the view |
|
849 |
* @param f the factory to use to rebuild if the view has children |
|
850 |
* @see View#insertUpdate |
|
851 |
*/ |
|
852 |
public void insertUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
|
853 |
super.insertUpdate(e, a, this); |
|
854 |
} |
|
855 |
||
856 |
/** |
|
857 |
* Gives notification that something was removed from the document |
|
858 |
* in a location that this view is responsible for. |
|
859 |
* This replaces the ViewFactory with an implementation that |
|
860 |
* calls through to the createTableRow and createTableCell |
|
861 |
* methods. If the element given to the factory isn't a |
|
862 |
* table row or cell, the request is delegated to the factory |
|
863 |
* passed as an argument. |
|
864 |
* |
|
865 |
* @param e the change information from the associated document |
|
866 |
* @param a the current allocation of the view |
|
867 |
* @param f the factory to use to rebuild if the view has children |
|
868 |
* @see View#removeUpdate |
|
869 |
*/ |
|
870 |
public void removeUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
|
871 |
super.removeUpdate(e, a, this); |
|
872 |
} |
|
873 |
||
874 |
/** |
|
875 |
* Gives notification from the document that attributes were changed |
|
876 |
* in a location that this view is responsible for. |
|
877 |
* This replaces the ViewFactory with an implementation that |
|
878 |
* calls through to the createTableRow and createTableCell |
|
879 |
* methods. If the element given to the factory isn't a |
|
880 |
* table row or cell, the request is delegated to the factory |
|
881 |
* passed as an argument. |
|
882 |
* |
|
883 |
* @param e the change information from the associated document |
|
884 |
* @param a the current allocation of the view |
|
885 |
* @param f the factory to use to rebuild if the view has children |
|
886 |
* @see View#changedUpdate |
|
887 |
*/ |
|
888 |
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
|
889 |
super.changedUpdate(e, a, this); |
|
890 |
} |
|
891 |
||
892 |
protected void forwardUpdate(DocumentEvent.ElementChange ec, |
|
893 |
DocumentEvent e, Shape a, ViewFactory f) { |
|
894 |
super.forwardUpdate(ec, e, a, f); |
|
895 |
// A change in any of the table cells usually effects the whole table, |
|
896 |
// so redraw it all! |
|
897 |
if (a != null) { |
|
898 |
Component c = getContainer(); |
|
899 |
if (c != null) { |
|
900 |
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : |
|
901 |
a.getBounds(); |
|
902 |
c.repaint(alloc.x, alloc.y, alloc.width, alloc.height); |
|
903 |
} |
|
904 |
} |
|
905 |
} |
|
906 |
||
907 |
/** |
|
908 |
* Change the child views. This is implemented to |
|
909 |
* provide the superclass behavior and invalidate the |
|
910 |
* grid so that rows and columns will be recalculated. |
|
911 |
*/ |
|
912 |
public void replace(int offset, int length, View[] views) { |
|
913 |
super.replace(offset, length, views); |
|
914 |
invalidateGrid(); |
|
915 |
} |
|
916 |
||
917 |
// --- ViewFactory methods ------------------------------------------ |
|
918 |
||
919 |
/** |
|
920 |
* The table itself acts as a factory for the various |
|
921 |
* views that actually represent pieces of the table. |
|
922 |
* All other factory activity is delegated to the factory |
|
923 |
* returned by the parent of the table. |
|
924 |
*/ |
|
925 |
public View create(Element elem) { |
|
926 |
Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute); |
|
927 |
if (o instanceof HTML.Tag) { |
|
928 |
HTML.Tag kind = (HTML.Tag) o; |
|
929 |
if (kind == HTML.Tag.TR) { |
|
930 |
return createTableRow(elem); |
|
931 |
} else if ((kind == HTML.Tag.TD) || (kind == HTML.Tag.TH)) { |
|
932 |
return new CellView(elem); |
|
933 |
} else if (kind == HTML.Tag.CAPTION) { |
|
934 |
return new javax.swing.text.html.ParagraphView(elem); |
|
935 |
} |
|
936 |
} |
|
937 |
// default is to delegate to the normal factory |
|
938 |
View p = getParent(); |
|
939 |
if (p != null) { |
|
940 |
ViewFactory f = p.getViewFactory(); |
|
941 |
if (f != null) { |
|
942 |
return f.create(elem); |
|
943 |
} |
|
944 |
} |
|
945 |
return null; |
|
946 |
} |
|
947 |
||
948 |
// ---- variables ---------------------------------------------------- |
|
949 |
||
950 |
private AttributeSet attr; |
|
951 |
private StyleSheet.BoxPainter painter; |
|
952 |
||
953 |
private int cellSpacing; |
|
954 |
private int borderWidth; |
|
955 |
||
956 |
/** |
|
957 |
* The index of the caption view if there is a caption. |
|
958 |
* This has a value of -1 if there is no caption. The |
|
959 |
* caption lives in the inset area of the table, and is |
|
960 |
* updated with each time the grid is recalculated. |
|
961 |
*/ |
|
962 |
private int captionIndex; |
|
963 |
||
964 |
/** |
|
965 |
* Do any of the table cells contain a relative size |
|
966 |
* specification? This is updated with each call to |
|
967 |
* updateGrid(). If this is true, the ColumnIterator |
|
968 |
* will do extra work to calculate relative cell |
|
969 |
* specifications. |
|
970 |
*/ |
|
971 |
private boolean relativeCells; |
|
972 |
||
973 |
/** |
|
974 |
* Do any of the table cells span multiple rows? If |
|
975 |
* true, the RowRequirementIterator will do additional |
|
976 |
* work to adjust the requirements of rows spanned by |
|
977 |
* a single table cell. This is updated with each call to |
|
978 |
* updateGrid(). |
|
979 |
*/ |
|
980 |
private boolean multiRowCells; |
|
981 |
||
982 |
int[] columnSpans; |
|
983 |
int[] columnOffsets; |
|
984 |
/** |
|
985 |
* SizeRequirements for all the columns. |
|
986 |
*/ |
|
987 |
SizeRequirements totalColumnRequirements; |
|
988 |
SizeRequirements[] columnRequirements; |
|
989 |
||
990 |
RowIterator rowIterator = new RowIterator(); |
|
991 |
ColumnIterator colIterator = new ColumnIterator(); |
|
992 |
||
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
993 |
Vector<RowView> rows; |
2 | 994 |
|
995 |
// whether to display comments inside table or not. |
|
996 |
boolean skipComments = false; |
|
997 |
||
998 |
boolean gridValid; |
|
32865
f9cb6e427f9e
8136783: Run blessed-modifier-order script on java.desktop
prr
parents:
25859
diff
changeset
|
999 |
private static final BitSet EMPTY = new BitSet(); |
2 | 1000 |
|
1001 |
class ColumnIterator implements CSS.LayoutIterator { |
|
1002 |
||
1003 |
/** |
|
1004 |
* Disable percentage adjustments which should only apply |
|
1005 |
* when calculating layout, not requirements. |
|
1006 |
*/ |
|
1007 |
void disablePercentages() { |
|
1008 |
percentages = null; |
|
1009 |
} |
|
1010 |
||
1011 |
/** |
|
1012 |
* Update percentage adjustments if they are needed. |
|
1013 |
*/ |
|
1014 |
private void updatePercentagesAndAdjustmentWeights(int span) { |
|
1015 |
adjustmentWeights = new int[columnRequirements.length]; |
|
1016 |
for (int i = 0; i < columnRequirements.length; i++) { |
|
1017 |
adjustmentWeights[i] = 0; |
|
1018 |
} |
|
1019 |
if (relativeCells) { |
|
1020 |
percentages = new int[columnRequirements.length]; |
|
1021 |
} else { |
|
1022 |
percentages = null; |
|
1023 |
} |
|
1024 |
int nrows = getRowCount(); |
|
1025 |
for (int rowIndex = 0; rowIndex < nrows; rowIndex++) { |
|
1026 |
RowView row = getRow(rowIndex); |
|
1027 |
int col = 0; |
|
1028 |
int ncells = row.getViewCount(); |
|
1029 |
for (int cell = 0; cell < ncells; cell++, col++) { |
|
1030 |
View cv = row.getView(cell); |
|
1031 |
for (; row.isFilled(col); col++); // advance to a free column |
|
1032 |
int rowSpan = getRowsOccupied(cv); |
|
1033 |
int colSpan = getColumnsOccupied(cv); |
|
1034 |
AttributeSet a = cv.getAttributes(); |
|
1035 |
CSS.LengthValue lv = (CSS.LengthValue) |
|
1036 |
a.getAttribute(CSS.Attribute.WIDTH); |
|
1037 |
if ( lv != null ) { |
|
1038 |
int len = (int) (lv.getValue(span) / colSpan + 0.5f); |
|
1039 |
for (int i = 0; i < colSpan; i++) { |
|
1040 |
if (lv.isPercentage()) { |
|
1041 |
// add a percentage requirement |
|
1042 |
percentages[col+i] = Math.max(percentages[col+i], len); |
|
1043 |
adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight); |
|
1044 |
} else { |
|
1045 |
adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight - 1); |
|
1046 |
} |
|
1047 |
} |
|
1048 |
} |
|
1049 |
col += colSpan - 1; |
|
1050 |
} |
|
1051 |
} |
|
1052 |
} |
|
1053 |
||
1054 |
/** |
|
1055 |
* Set the layout arrays to use for holding layout results |
|
1056 |
*/ |
|
1057 |
public void setLayoutArrays(int offsets[], int spans[], int targetSpan) { |
|
1058 |
this.offsets = offsets; |
|
1059 |
this.spans = spans; |
|
1060 |
updatePercentagesAndAdjustmentWeights(targetSpan); |
|
1061 |
} |
|
1062 |
||
1063 |
// --- RequirementIterator methods ------------------- |
|
1064 |
||
1065 |
public int getCount() { |
|
1066 |
return columnRequirements.length; |
|
1067 |
} |
|
1068 |
||
1069 |
public void setIndex(int i) { |
|
1070 |
col = i; |
|
1071 |
} |
|
1072 |
||
1073 |
public void setOffset(int offs) { |
|
1074 |
offsets[col] = offs; |
|
1075 |
} |
|
1076 |
||
1077 |
public int getOffset() { |
|
1078 |
return offsets[col]; |
|
1079 |
} |
|
1080 |
||
1081 |
public void setSpan(int span) { |
|
1082 |
spans[col] = span; |
|
1083 |
} |
|
1084 |
||
1085 |
public int getSpan() { |
|
1086 |
return spans[col]; |
|
1087 |
} |
|
1088 |
||
1089 |
public float getMinimumSpan(float parentSpan) { |
|
1090 |
// do not care for percentages, since min span can't |
|
1091 |
// be less than columnRequirements[col].minimum, |
|
1092 |
// but can be less than percentage value. |
|
1093 |
return columnRequirements[col].minimum; |
|
1094 |
} |
|
1095 |
||
1096 |
public float getPreferredSpan(float parentSpan) { |
|
1097 |
if ((percentages != null) && (percentages[col] != 0)) { |
|
1098 |
return Math.max(percentages[col], columnRequirements[col].minimum); |
|
1099 |
} |
|
1100 |
return columnRequirements[col].preferred; |
|
1101 |
} |
|
1102 |
||
1103 |
public float getMaximumSpan(float parentSpan) { |
|
1104 |
return columnRequirements[col].maximum; |
|
1105 |
} |
|
1106 |
||
1107 |
public float getBorderWidth() { |
|
1108 |
return borderWidth; |
|
1109 |
} |
|
1110 |
||
1111 |
||
1112 |
public float getLeadingCollapseSpan() { |
|
1113 |
return cellSpacing; |
|
1114 |
} |
|
1115 |
||
1116 |
public float getTrailingCollapseSpan() { |
|
1117 |
return cellSpacing; |
|
1118 |
} |
|
1119 |
||
1120 |
public int getAdjustmentWeight() { |
|
1121 |
return adjustmentWeights[col]; |
|
1122 |
} |
|
1123 |
||
1124 |
/** |
|
1125 |
* Current column index |
|
1126 |
*/ |
|
1127 |
private int col; |
|
1128 |
||
1129 |
/** |
|
1130 |
* percentage values (may be null since there |
|
1131 |
* might not be any). |
|
1132 |
*/ |
|
1133 |
private int[] percentages; |
|
1134 |
||
1135 |
private int[] adjustmentWeights; |
|
1136 |
||
1137 |
private int[] offsets; |
|
1138 |
private int[] spans; |
|
1139 |
} |
|
1140 |
||
1141 |
class RowIterator implements CSS.LayoutIterator { |
|
1142 |
||
1143 |
RowIterator() { |
|
1144 |
} |
|
1145 |
||
1146 |
void updateAdjustments() { |
|
1147 |
int axis = Y_AXIS; |
|
1148 |
if (multiRowCells) { |
|
1149 |
// adjust requirements of multi-row cells |
|
1150 |
int n = getRowCount(); |
|
1151 |
adjustments = new int[n]; |
|
1152 |
for (int i = 0; i < n; i++) { |
|
1153 |
RowView rv = getRow(i); |
|
1154 |
if (rv.multiRowCells == true) { |
|
1155 |
int ncells = rv.getViewCount(); |
|
1156 |
for (int j = 0; j < ncells; j++) { |
|
1157 |
View v = rv.getView(j); |
|
1158 |
int nrows = getRowsOccupied(v); |
|
1159 |
if (nrows > 1) { |
|
1160 |
int spanNeeded = (int) v.getPreferredSpan(axis); |
|
1161 |
adjustMultiRowSpan(spanNeeded, nrows, i); |
|
1162 |
} |
|
1163 |
} |
|
1164 |
} |
|
1165 |
} |
|
1166 |
} else { |
|
1167 |
adjustments = null; |
|
1168 |
} |
|
1169 |
} |
|
1170 |
||
1171 |
/** |
|
21278 | 1172 |
* Fixup preferences to accommodate a multi-row table cell |
2 | 1173 |
* if not already covered by existing preferences. This is |
1174 |
* a no-op if not all of the rows needed (to do this check/fixup) |
|
1175 |
* have arrived yet. |
|
1176 |
*/ |
|
1177 |
void adjustMultiRowSpan(int spanNeeded, int nrows, int rowIndex) { |
|
1178 |
if ((rowIndex + nrows) > getCount()) { |
|
1179 |
// rows are missing (could be a bad rowspan specification) |
|
1180 |
// or not all the rows have arrived. Do the best we can with |
|
1181 |
// the current set of rows. |
|
1182 |
nrows = getCount() - rowIndex; |
|
1183 |
if (nrows < 1) { |
|
1184 |
return; |
|
1185 |
} |
|
1186 |
} |
|
1187 |
int span = 0; |
|
1188 |
for (int i = 0; i < nrows; i++) { |
|
1189 |
RowView rv = getRow(rowIndex + i); |
|
1190 |
span += rv.getPreferredSpan(Y_AXIS); |
|
1191 |
} |
|
1192 |
if (spanNeeded > span) { |
|
1193 |
int adjust = (spanNeeded - span); |
|
1194 |
int rowAdjust = adjust / nrows; |
|
1195 |
int firstAdjust = rowAdjust + (adjust - (rowAdjust * nrows)); |
|
1196 |
RowView rv = getRow(rowIndex); |
|
1197 |
adjustments[rowIndex] = Math.max(adjustments[rowIndex], |
|
1198 |
firstAdjust); |
|
1199 |
for (int i = 1; i < nrows; i++) { |
|
1200 |
adjustments[rowIndex + i] = Math.max( |
|
1201 |
adjustments[rowIndex + i], rowAdjust); |
|
1202 |
} |
|
1203 |
} |
|
1204 |
} |
|
1205 |
||
1206 |
void setLayoutArrays(int[] offsets, int[] spans) { |
|
1207 |
this.offsets = offsets; |
|
1208 |
this.spans = spans; |
|
1209 |
} |
|
1210 |
||
1211 |
// --- RequirementIterator methods ------------------- |
|
1212 |
||
1213 |
public void setOffset(int offs) { |
|
1214 |
RowView rv = getRow(row); |
|
1215 |
if (rv != null) { |
|
1216 |
offsets[rv.viewIndex] = offs; |
|
1217 |
} |
|
1218 |
} |
|
1219 |
||
1220 |
public int getOffset() { |
|
1221 |
RowView rv = getRow(row); |
|
1222 |
if (rv != null) { |
|
1223 |
return offsets[rv.viewIndex]; |
|
1224 |
} |
|
1225 |
return 0; |
|
1226 |
} |
|
1227 |
||
1228 |
public void setSpan(int span) { |
|
1229 |
RowView rv = getRow(row); |
|
1230 |
if (rv != null) { |
|
1231 |
spans[rv.viewIndex] = span; |
|
1232 |
} |
|
1233 |
} |
|
1234 |
||
1235 |
public int getSpan() { |
|
1236 |
RowView rv = getRow(row); |
|
1237 |
if (rv != null) { |
|
1238 |
return spans[rv.viewIndex]; |
|
1239 |
} |
|
1240 |
return 0; |
|
1241 |
} |
|
1242 |
||
1243 |
public int getCount() { |
|
1244 |
return rows.size(); |
|
1245 |
} |
|
1246 |
||
1247 |
public void setIndex(int i) { |
|
1248 |
row = i; |
|
1249 |
} |
|
1250 |
||
1251 |
public float getMinimumSpan(float parentSpan) { |
|
1252 |
return getPreferredSpan(parentSpan); |
|
1253 |
} |
|
1254 |
||
1255 |
public float getPreferredSpan(float parentSpan) { |
|
1256 |
RowView rv = getRow(row); |
|
1257 |
if (rv != null) { |
|
1258 |
int adjust = (adjustments != null) ? adjustments[row] : 0; |
|
1259 |
return rv.getPreferredSpan(TableView.this.getAxis()) + adjust; |
|
1260 |
} |
|
1261 |
return 0; |
|
1262 |
} |
|
1263 |
||
1264 |
public float getMaximumSpan(float parentSpan) { |
|
1265 |
return getPreferredSpan(parentSpan); |
|
1266 |
} |
|
1267 |
||
1268 |
public float getBorderWidth() { |
|
1269 |
return borderWidth; |
|
1270 |
} |
|
1271 |
||
1272 |
public float getLeadingCollapseSpan() { |
|
1273 |
return cellSpacing; |
|
1274 |
} |
|
1275 |
||
1276 |
public float getTrailingCollapseSpan() { |
|
1277 |
return cellSpacing; |
|
1278 |
} |
|
1279 |
||
1280 |
public int getAdjustmentWeight() { |
|
1281 |
return 0; |
|
1282 |
} |
|
1283 |
||
1284 |
/** |
|
1285 |
* Current row index |
|
1286 |
*/ |
|
1287 |
private int row; |
|
1288 |
||
1289 |
/** |
|
1290 |
* Adjustments to the row requirements to handle multi-row |
|
1291 |
* table cells. |
|
1292 |
*/ |
|
1293 |
private int[] adjustments; |
|
1294 |
||
1295 |
private int[] offsets; |
|
1296 |
private int[] spans; |
|
1297 |
} |
|
1298 |
||
1299 |
/** |
|
1300 |
* View of a row in a row-centric table. |
|
1301 |
*/ |
|
1302 |
public class RowView extends BoxView { |
|
1303 |
||
1304 |
/** |
|
1305 |
* Constructs a TableView for the given element. |
|
1306 |
* |
|
1307 |
* @param elem the element that this view is responsible for |
|
1308 |
*/ |
|
1309 |
public RowView(Element elem) { |
|
1310 |
super(elem, View.X_AXIS); |
|
1311 |
fillColumns = new BitSet(); |
|
1312 |
RowView.this.setPropertiesFromAttributes(); |
|
1313 |
} |
|
1314 |
||
1315 |
void clearFilledColumns() { |
|
1316 |
fillColumns.and(EMPTY); |
|
1317 |
} |
|
1318 |
||
1319 |
void fillColumn(int col) { |
|
1320 |
fillColumns.set(col); |
|
1321 |
} |
|
1322 |
||
1323 |
boolean isFilled(int col) { |
|
1324 |
return fillColumns.get(col); |
|
1325 |
} |
|
1326 |
||
1327 |
/** |
|
1328 |
* The number of columns present in this row. |
|
1329 |
*/ |
|
1330 |
int getColumnCount() { |
|
1331 |
int nfill = 0; |
|
1332 |
int n = fillColumns.size(); |
|
1333 |
for (int i = 0; i < n; i++) { |
|
1334 |
if (fillColumns.get(i)) { |
|
1335 |
nfill ++; |
|
1336 |
} |
|
1337 |
} |
|
1338 |
return getViewCount() + nfill; |
|
1339 |
} |
|
1340 |
||
1341 |
/** |
|
1342 |
* Fetches the attributes to use when rendering. This is |
|
1343 |
* implemented to multiplex the attributes specified in the |
|
1344 |
* model with a StyleSheet. |
|
1345 |
*/ |
|
1346 |
public AttributeSet getAttributes() { |
|
1347 |
return attr; |
|
1348 |
} |
|
1349 |
||
1350 |
View findViewAtPoint(int x, int y, Rectangle alloc) { |
|
1351 |
int n = getViewCount(); |
|
1352 |
for (int i = 0; i < n; i++) { |
|
1353 |
if (getChildAllocation(i, alloc).contains(x, y)) { |
|
1354 |
childAllocation(i, alloc); |
|
1355 |
return getView(i); |
|
1356 |
} |
|
1357 |
} |
|
1358 |
return null; |
|
1359 |
} |
|
1360 |
||
1361 |
protected StyleSheet getStyleSheet() { |
|
1362 |
HTMLDocument doc = (HTMLDocument) getDocument(); |
|
1363 |
return doc.getStyleSheet(); |
|
1364 |
} |
|
1365 |
||
1366 |
/** |
|
1367 |
* This is called by a child to indicate its |
|
1368 |
* preferred span has changed. This is implemented to |
|
1369 |
* execute the superclass behavior and well as try to |
|
1370 |
* determine if a row with a multi-row cell hangs across |
|
1371 |
* this row. If a multi-row cell covers this row it also |
|
1372 |
* needs to propagate a preferenceChanged so that it will |
|
1373 |
* recalculate the multi-row cell. |
|
1374 |
* |
|
1375 |
* @param child the child view |
|
1376 |
* @param width true if the width preference should change |
|
1377 |
* @param height true if the height preference should change |
|
1378 |
*/ |
|
1379 |
public void preferenceChanged(View child, boolean width, boolean height) { |
|
1380 |
super.preferenceChanged(child, width, height); |
|
1381 |
if (TableView.this.multiRowCells && height) { |
|
1382 |
for (int i = rowIndex - 1; i >= 0; i--) { |
|
1383 |
RowView rv = TableView.this.getRow(i); |
|
1384 |
if (rv.multiRowCells) { |
|
1385 |
rv.preferenceChanged(null, false, true); |
|
1386 |
break; |
|
1387 |
} |
|
1388 |
} |
|
1389 |
} |
|
1390 |
} |
|
1391 |
||
1392 |
// The major axis requirements for a row are dictated by the column |
|
1393 |
// requirements. These methods use the value calculated by |
|
1394 |
// TableView. |
|
1395 |
protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) { |
|
1396 |
SizeRequirements req = new SizeRequirements(); |
|
1397 |
req.minimum = totalColumnRequirements.minimum; |
|
1398 |
req.maximum = totalColumnRequirements.maximum; |
|
1399 |
req.preferred = totalColumnRequirements.preferred; |
|
1400 |
req.alignment = 0f; |
|
1401 |
return req; |
|
1402 |
} |
|
1403 |
||
1404 |
public float getMinimumSpan(int axis) { |
|
1405 |
float value; |
|
1406 |
||
1407 |
if (axis == View.X_AXIS) { |
|
1408 |
value = totalColumnRequirements.minimum + getLeftInset() + |
|
1409 |
getRightInset(); |
|
1410 |
} |
|
1411 |
else { |
|
1412 |
value = super.getMinimumSpan(axis); |
|
1413 |
} |
|
1414 |
return value; |
|
1415 |
} |
|
1416 |
||
1417 |
public float getMaximumSpan(int axis) { |
|
1418 |
float value; |
|
1419 |
||
1420 |
if (axis == View.X_AXIS) { |
|
1421 |
// We're flexible. |
|
1422 |
value = (float)Integer.MAX_VALUE; |
|
1423 |
} |
|
1424 |
else { |
|
1425 |
value = super.getMaximumSpan(axis); |
|
1426 |
} |
|
1427 |
return value; |
|
1428 |
} |
|
1429 |
||
1430 |
public float getPreferredSpan(int axis) { |
|
1431 |
float value; |
|
1432 |
||
1433 |
if (axis == View.X_AXIS) { |
|
1434 |
value = totalColumnRequirements.preferred + getLeftInset() + |
|
1435 |
getRightInset(); |
|
1436 |
} |
|
1437 |
else { |
|
1438 |
value = super.getPreferredSpan(axis); |
|
1439 |
} |
|
1440 |
return value; |
|
1441 |
} |
|
1442 |
||
1443 |
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
|
1444 |
super.changedUpdate(e, a, f); |
|
1445 |
int pos = e.getOffset(); |
|
1446 |
if (pos <= getStartOffset() && (pos + e.getLength()) >= |
|
1447 |
getEndOffset()) { |
|
1448 |
RowView.this.setPropertiesFromAttributes(); |
|
1449 |
} |
|
1450 |
} |
|
1451 |
||
1452 |
/** |
|
1453 |
* Renders using the given rendering surface and area on that |
|
1454 |
* surface. This is implemented to delegate to the css box |
|
1455 |
* painter to paint the border and background prior to the |
|
1456 |
* interior. |
|
1457 |
* |
|
1458 |
* @param g the rendering surface to use |
|
1459 |
* @param allocation the allocated region to render into |
|
1460 |
* @see View#paint |
|
1461 |
*/ |
|
1462 |
public void paint(Graphics g, Shape allocation) { |
|
1463 |
Rectangle a = (Rectangle) allocation; |
|
1464 |
painter.paint(g, a.x, a.y, a.width, a.height, this); |
|
1465 |
super.paint(g, a); |
|
1466 |
} |
|
1467 |
||
1468 |
/** |
|
1469 |
* Change the child views. This is implemented to |
|
1470 |
* provide the superclass behavior and invalidate the |
|
1471 |
* grid so that rows and columns will be recalculated. |
|
1472 |
*/ |
|
1473 |
public void replace(int offset, int length, View[] views) { |
|
1474 |
super.replace(offset, length, views); |
|
1475 |
invalidateGrid(); |
|
1476 |
} |
|
1477 |
||
1478 |
/** |
|
1479 |
* Calculate the height requirements of the table row. The |
|
1480 |
* requirements of multi-row cells are not considered for this |
|
1481 |
* calculation. The table itself will check and adjust the row |
|
1482 |
* requirements for all the rows that have multi-row cells spanning |
|
1483 |
* them. This method updates the multi-row flag that indicates that |
|
1484 |
* this row and rows below need additional consideration. |
|
1485 |
*/ |
|
1486 |
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
|
1487 |
// return super.calculateMinorAxisRequirements(axis, r); |
|
1488 |
long min = 0; |
|
1489 |
long pref = 0; |
|
1490 |
long max = 0; |
|
1491 |
multiRowCells = false; |
|
1492 |
int n = getViewCount(); |
|
1493 |
for (int i = 0; i < n; i++) { |
|
1494 |
View v = getView(i); |
|
1495 |
if (getRowsOccupied(v) > 1) { |
|
1496 |
multiRowCells = true; |
|
1497 |
max = Math.max((int) v.getMaximumSpan(axis), max); |
|
1498 |
} else { |
|
1499 |
min = Math.max((int) v.getMinimumSpan(axis), min); |
|
1500 |
pref = Math.max((int) v.getPreferredSpan(axis), pref); |
|
1501 |
max = Math.max((int) v.getMaximumSpan(axis), max); |
|
1502 |
} |
|
1503 |
} |
|
1504 |
||
1505 |
if (r == null) { |
|
1506 |
r = new SizeRequirements(); |
|
1507 |
r.alignment = 0.5f; |
|
1508 |
} |
|
1509 |
r.preferred = (int) pref; |
|
1510 |
r.minimum = (int) min; |
|
1511 |
r.maximum = (int) max; |
|
1512 |
return r; |
|
1513 |
} |
|
1514 |
||
1515 |
/** |
|
1516 |
* Perform layout for the major axis of the box (i.e. the |
|
1517 |
* axis that it represents). The results of the layout should |
|
1518 |
* be placed in the given arrays which represent the allocations |
|
1519 |
* to the children along the major axis. |
|
1520 |
* <p> |
|
1521 |
* This is re-implemented to give each child the span of the column |
|
1522 |
* width for the table, and to give cells that span multiple columns |
|
1523 |
* the multi-column span. |
|
1524 |
* |
|
1525 |
* @param targetSpan the total span given to the view, which |
|
21278 | 1526 |
* would be used to layout the children |
2 | 1527 |
* @param axis the axis being layed out |
1528 |
* @param offsets the offsets from the origin of the view for |
|
1529 |
* each of the child views; this is a return value and is |
|
1530 |
* filled in by the implementation of this method |
|
1531 |
* @param spans the span of each child view; this is a return |
|
1532 |
* value and is filled in by the implementation of this method |
|
1533 |
* @return the offset and span for each child view in the |
|
1534 |
* offsets and spans parameters |
|
1535 |
*/ |
|
1536 |
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
1537 |
int col = 0; |
|
1538 |
int ncells = getViewCount(); |
|
1539 |
for (int cell = 0; cell < ncells; cell++) { |
|
1540 |
View cv = getView(cell); |
|
1541 |
if (skipComments && !(cv instanceof CellView)) { |
|
1542 |
continue; |
|
1543 |
} |
|
1544 |
for (; isFilled(col); col++); // advance to a free column |
|
1545 |
int colSpan = getColumnsOccupied(cv); |
|
1546 |
spans[cell] = columnSpans[col]; |
|
1547 |
offsets[cell] = columnOffsets[col]; |
|
1548 |
if (colSpan > 1) { |
|
1549 |
int n = columnSpans.length; |
|
1550 |
for (int j = 1; j < colSpan; j++) { |
|
1551 |
// Because the table may be only partially formed, some |
|
1552 |
// of the columns may not yet exist. Therefore we check |
|
1553 |
// the bounds. |
|
1554 |
if ((col+j) < n) { |
|
1555 |
spans[cell] += columnSpans[col+j]; |
|
1556 |
spans[cell] += cellSpacing; |
|
1557 |
} |
|
1558 |
} |
|
1559 |
col += colSpan - 1; |
|
1560 |
} |
|
1561 |
col++; |
|
1562 |
} |
|
1563 |
} |
|
1564 |
||
1565 |
/** |
|
1566 |
* Perform layout for the minor axis of the box (i.e. the |
|
21278 | 1567 |
* axis orthogonal to the axis that it represents). The results |
2 | 1568 |
* of the layout should be placed in the given arrays which represent |
1569 |
* the allocations to the children along the minor axis. This |
|
1570 |
* is called by the superclass whenever the layout needs to be |
|
1571 |
* updated along the minor axis. |
|
1572 |
* <p> |
|
1573 |
* This is implemented to delegate to the superclass, then adjust |
|
1574 |
* the span for any cell that spans multiple rows. |
|
1575 |
* |
|
1576 |
* @param targetSpan the total span given to the view, which |
|
21278 | 1577 |
* would be used to layout the children |
2 | 1578 |
* @param axis the axis being layed out |
1579 |
* @param offsets the offsets from the origin of the view for |
|
1580 |
* each of the child views; this is a return value and is |
|
1581 |
* filled in by the implementation of this method |
|
1582 |
* @param spans the span of each child view; this is a return |
|
1583 |
* value and is filled in by the implementation of this method |
|
1584 |
* @return the offset and span for each child view in the |
|
1585 |
* offsets and spans parameters |
|
1586 |
*/ |
|
1587 |
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
1588 |
super.layoutMinorAxis(targetSpan, axis, offsets, spans); |
|
1589 |
int col = 0; |
|
1590 |
int ncells = getViewCount(); |
|
1591 |
for (int cell = 0; cell < ncells; cell++, col++) { |
|
1592 |
View cv = getView(cell); |
|
1593 |
for (; isFilled(col); col++); // advance to a free column |
|
1594 |
int colSpan = getColumnsOccupied(cv); |
|
1595 |
int rowSpan = getRowsOccupied(cv); |
|
1596 |
if (rowSpan > 1) { |
|
1597 |
||
1598 |
int row0 = rowIndex; |
|
1599 |
int row1 = Math.min(rowIndex + rowSpan - 1, getRowCount()-1); |
|
1600 |
spans[cell] = getMultiRowSpan(row0, row1); |
|
1601 |
} |
|
1602 |
if (colSpan > 1) { |
|
1603 |
col += colSpan - 1; |
|
1604 |
} |
|
1605 |
} |
|
1606 |
} |
|
1607 |
||
1608 |
/** |
|
1609 |
* Determines the resizability of the view along the |
|
1610 |
* given axis. A value of 0 or less is not resizable. |
|
1611 |
* |
|
1612 |
* @param axis may be either View.X_AXIS or View.Y_AXIS |
|
1613 |
* @return the resize weight |
|
1614 |
* @exception IllegalArgumentException for an invalid axis |
|
1615 |
*/ |
|
1616 |
public int getResizeWeight(int axis) { |
|
1617 |
return 1; |
|
1618 |
} |
|
1619 |
||
1620 |
/** |
|
1621 |
* Fetches the child view that represents the given position in |
|
1622 |
* the model. This is implemented to walk through the children |
|
1623 |
* looking for a range that contains the given position. In this |
|
1624 |
* view the children do not necessarily have a one to one mapping |
|
1625 |
* with the child elements. |
|
1626 |
* |
|
1627 |
* @param pos the search position >= 0 |
|
1628 |
* @param a the allocation to the table on entry, and the |
|
1629 |
* allocation of the view containing the position on exit |
|
1630 |
* @return the view representing the given position, or |
|
1631 |
* null if there isn't one |
|
1632 |
*/ |
|
1633 |
protected View getViewAtPosition(int pos, Rectangle a) { |
|
1634 |
int n = getViewCount(); |
|
1635 |
for (int i = 0; i < n; i++) { |
|
1636 |
View v = getView(i); |
|
1637 |
int p0 = v.getStartOffset(); |
|
1638 |
int p1 = v.getEndOffset(); |
|
1639 |
if ((pos >= p0) && (pos < p1)) { |
|
1640 |
// it's in this view. |
|
1641 |
if (a != null) { |
|
1642 |
childAllocation(i, a); |
|
1643 |
} |
|
1644 |
return v; |
|
1645 |
} |
|
1646 |
} |
|
1647 |
if (pos == getEndOffset()) { |
|
1648 |
View v = getView(n - 1); |
|
1649 |
if (a != null) { |
|
1650 |
this.childAllocation(n - 1, a); |
|
1651 |
} |
|
1652 |
return v; |
|
1653 |
} |
|
1654 |
return null; |
|
1655 |
} |
|
1656 |
||
1657 |
/** |
|
1658 |
* Update any cached values that come from attributes. |
|
1659 |
*/ |
|
1660 |
void setPropertiesFromAttributes() { |
|
1661 |
StyleSheet sheet = getStyleSheet(); |
|
1662 |
attr = sheet.getViewAttributes(this); |
|
1663 |
painter = sheet.getBoxPainter(attr); |
|
1664 |
} |
|
1665 |
||
1666 |
private StyleSheet.BoxPainter painter; |
|
1667 |
private AttributeSet attr; |
|
1668 |
||
1669 |
/** columns filled by multi-column or multi-row cells */ |
|
1670 |
BitSet fillColumns; |
|
1671 |
||
1672 |
/** |
|
1673 |
* The row index within the overall grid |
|
1674 |
*/ |
|
1675 |
int rowIndex; |
|
1676 |
||
1677 |
/** |
|
1678 |
* The view index (for row index to view index conversion). |
|
1679 |
* This is set by the updateGrid method. |
|
1680 |
*/ |
|
1681 |
int viewIndex; |
|
1682 |
||
1683 |
/** |
|
1684 |
* Does this table row have cells that span multiple rows? |
|
1685 |
*/ |
|
1686 |
boolean multiRowCells; |
|
1687 |
||
1688 |
} |
|
1689 |
||
1690 |
/** |
|
1691 |
* Default view of an html table cell. This needs to be moved |
|
1692 |
* somewhere else. |
|
1693 |
*/ |
|
1694 |
class CellView extends BlockView { |
|
1695 |
||
1696 |
/** |
|
1697 |
* Constructs a TableCell for the given element. |
|
1698 |
* |
|
1699 |
* @param elem the element that this view is responsible for |
|
1700 |
*/ |
|
1701 |
public CellView(Element elem) { |
|
1702 |
super(elem, Y_AXIS); |
|
1703 |
} |
|
1704 |
||
1705 |
/** |
|
1706 |
* Perform layout for the major axis of the box (i.e. the |
|
1707 |
* axis that it represents). The results of the layout should |
|
1708 |
* be placed in the given arrays which represent the allocations |
|
1709 |
* to the children along the major axis. This is called by the |
|
1710 |
* superclass to recalculate the positions of the child views |
|
1711 |
* when the layout might have changed. |
|
1712 |
* <p> |
|
1713 |
* This is implemented to delegate to the superclass to |
|
1714 |
* tile the children. If the target span is greater than |
|
1715 |
* was needed, the offsets are adjusted to align the children |
|
1716 |
* (i.e. position according to the html valign attribute). |
|
1717 |
* |
|
1718 |
* @param targetSpan the total span given to the view, which |
|
21278 | 1719 |
* would be used to layout the children |
2 | 1720 |
* @param axis the axis being layed out |
1721 |
* @param offsets the offsets from the origin of the view for |
|
1722 |
* each of the child views; this is a return value and is |
|
1723 |
* filled in by the implementation of this method |
|
1724 |
* @param spans the span of each child view; this is a return |
|
1725 |
* value and is filled in by the implementation of this method |
|
1726 |
* @return the offset and span for each child view in the |
|
1727 |
* offsets and spans parameters |
|
1728 |
*/ |
|
1729 |
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
1730 |
super.layoutMajorAxis(targetSpan, axis, offsets, spans); |
|
1731 |
// calculate usage |
|
1732 |
int used = 0; |
|
1733 |
int n = spans.length; |
|
1734 |
for (int i = 0; i < n; i++) { |
|
1735 |
used += spans[i]; |
|
1736 |
} |
|
1737 |
||
1738 |
// calculate adjustments |
|
1739 |
int adjust = 0; |
|
1740 |
if (used < targetSpan) { |
|
1741 |
// PENDING(prinz) change to use the css alignment. |
|
1742 |
String valign = (String) getElement().getAttributes().getAttribute( |
|
1743 |
HTML.Attribute.VALIGN); |
|
1744 |
if (valign == null) { |
|
1745 |
AttributeSet rowAttr = getElement().getParentElement().getAttributes(); |
|
1746 |
valign = (String) rowAttr.getAttribute(HTML.Attribute.VALIGN); |
|
1747 |
} |
|
1748 |
if ((valign == null) || valign.equals("middle")) { |
|
1749 |
adjust = (targetSpan - used) / 2; |
|
1750 |
} else if (valign.equals("bottom")) { |
|
1751 |
adjust = targetSpan - used; |
|
1752 |
} |
|
1753 |
} |
|
1754 |
||
1755 |
// make adjustments. |
|
1756 |
if (adjust != 0) { |
|
1757 |
for (int i = 0; i < n; i++) { |
|
1758 |
offsets[i] += adjust; |
|
1759 |
} |
|
1760 |
} |
|
1761 |
} |
|
1762 |
||
1763 |
/** |
|
1764 |
* Calculate the requirements needed along the major axis. |
|
1765 |
* This is called by the superclass whenever the requirements |
|
1766 |
* need to be updated (i.e. a preferenceChanged was messaged |
|
1767 |
* through this view). |
|
1768 |
* <p> |
|
1769 |
* This is implemented to delegate to the superclass, but |
|
1770 |
* indicate the maximum size is very large (i.e. the cell |
|
1771 |
* is willing to expend to occupy the full height of the row). |
|
1772 |
* |
|
1773 |
* @param axis the axis being layed out. |
|
1774 |
* @param r the requirements to fill in. If null, a new one |
|
1775 |
* should be allocated. |
|
1776 |
*/ |
|
1777 |
protected SizeRequirements calculateMajorAxisRequirements(int axis, |
|
1778 |
SizeRequirements r) { |
|
1779 |
SizeRequirements req = super.calculateMajorAxisRequirements(axis, r); |
|
1780 |
req.maximum = Integer.MAX_VALUE; |
|
1781 |
return req; |
|
1782 |
} |
|
1783 |
||
1784 |
@Override |
|
1785 |
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
|
1786 |
SizeRequirements rv = super.calculateMinorAxisRequirements(axis, r); |
|
1787 |
//for the cell the minimum should be derived from the child views |
|
1788 |
//the parent behaviour is to use CSS for that |
|
1789 |
int n = getViewCount(); |
|
1790 |
int min = 0; |
|
1791 |
for (int i = 0; i < n; i++) { |
|
1792 |
View v = getView(i); |
|
1793 |
min = Math.max((int) v.getMinimumSpan(axis), min); |
|
1794 |
} |
|
1795 |
rv.minimum = Math.min(rv.minimum, min); |
|
1796 |
return rv; |
|
1797 |
} |
|
1798 |
} |
|
1799 |
||
1800 |
||
1801 |
} |