/*

 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.apple.laf;

import java.awt.*;

import javax.swing.*;

import javax.swing.plaf.UIResource;

import apple.laf.JRSUIState;

import apple.laf.JRSUIConstants.*;

@SuppressWarnings("serial") // Superclass is not serializable across versions

class AquaComboBoxButton extends JButton {

    final protected JComboBox<Object> comboBox;

    final protected JList<?> list;

    final protected CellRendererPane rendererPane;

    final protected AquaComboBoxUI ui;

    protected final AquaPainter<JRSUIState> painter = AquaPainter.create(JRSUIState.getInstance());

    boolean isPopDown;

    boolean isSquare;

    @SuppressWarnings("serial") // anonymous class

    protected AquaComboBoxButton(final AquaComboBoxUI ui,

                                 final JComboBox<Object> comboBox,

                                 final CellRendererPane rendererPane,

                                 final JList<?> list) {

        super("");

        putClientProperty("JButton.buttonType", "comboboxInternal");

        this.ui = ui;

        this.comboBox = comboBox;

        this.rendererPane = rendererPane;

        this.list = list;

        setModel(new DefaultButtonModel() {

            public void setArmed(final boolean armed) {

                super.setArmed(isPressed() ? true : armed);

            }

        });

        setEnabled(comboBox.isEnabled());

    }

    public boolean isEnabled() {

        return comboBox == null ? true : comboBox.isEnabled();

    }

    public boolean isFocusTraversable() {

        return false;

    }

    protected void setIsPopDown(final boolean isPopDown) {

        this.isPopDown = isPopDown;

        repaint();

    }

    protected void setIsSquare(final boolean isSquare) {

        this.isSquare = isSquare;

        repaint();

    }

    protected State getState(final ButtonModel buttonModel) {

        if (!comboBox.isEnabled()) return State.DISABLED;

        if (!AquaFocusHandler.isActive(comboBox)) return State.INACTIVE;

        if (buttonModel.isArmed()) return State.PRESSED;

        return State.ACTIVE;

    }

    public void paintComponent(final Graphics g) {

        // Don't Paint the button as usual

        // super.paintComponent( g );

        final boolean editable = comboBox.isEditable();

        int top = 0;

        int left = 0;

        int width = getWidth();

        int height = getHeight();

        if (comboBox.isOpaque()) {

            g.setColor(getBackground());

            g.fillRect(0, 0, width, height);

        }

        final Size size = AquaUtilControlSize.getUserSizeFrom(comboBox);

        painter.state.set(size == null ? Size.REGULAR : size);

        final ButtonModel buttonModel = getModel();

        painter.state.set(getState(buttonModel));

        painter.state.set(AlignmentVertical.CENTER);

        if (AquaComboBoxUI.isTableCellEditor(comboBox)) {

            painter.state.set(AlignmentHorizontal.RIGHT);

            painter.state.set(Widget.BUTTON_POP_UP);

            painter.state.set(ArrowsOnly.YES);

            painter.paint(g, this, left, top, width, height);

            doRendererPaint(g, buttonModel, editable, getInsets(), left, top, width, height);

            return;

        }

        painter.state.set(AlignmentHorizontal.CENTER);

        final Insets insets = getInsets();

        if (!editable) {

            top += insets.top;

            left += insets.left;

            width -= insets.left + insets.right;

            height -= insets.top + insets.bottom;

        }

        if (height <= 0 || width <= 0) {

            return;

        }

        boolean hasFocus = comboBox.hasFocus();

        if (editable) {

            painter.state.set(Widget.BUTTON_COMBO_BOX);

            painter.state.set(IndicatorOnly.YES);

            painter.state.set(AlignmentHorizontal.LEFT);

            hasFocus |= comboBox.getEditor().getEditorComponent().hasFocus();

        } else {

            painter.state.set(IndicatorOnly.NO);

            painter.state.set(AlignmentHorizontal.CENTER);

            if (isPopDown) {

                painter.state.set(isSquare ? Widget.BUTTON_POP_DOWN_SQUARE : Widget.BUTTON_POP_DOWN);

            } else {

                painter.state.set(isSquare ? Widget.BUTTON_POP_UP_SQUARE : Widget.BUTTON_POP_UP);

            }

        }

        painter.state.set(hasFocus ? Focused.YES : Focused.NO);

        if (isSquare) {

            painter.paint(g, comboBox, left + 2, top - 1, width - 4, height);

        } else {

            painter.paint(g, comboBox, left, top, width, height);

        }

        // Let the renderer paint

        if (!editable && comboBox != null) {

            doRendererPaint(g, buttonModel, editable, insets, left, top, width, height);

        }

    }

    protected void doRendererPaint(final Graphics g, final ButtonModel buttonModel, final boolean editable, final Insets insets, int left, int top, int width, int height) {

        final ListCellRenderer<Object> renderer = comboBox.getRenderer();

        // fake it out! not renderPressed

        final Component c = renderer.getListCellRendererComponent(list, comboBox.getSelectedItem(), -1, false, false);

        // System.err.println("Renderer: " + renderer);

        if (!editable && !AquaComboBoxUI.isTableCellEditor(comboBox)) {

            final int indentLeft = 10;

            final int buttonWidth = 24;

            // hardcoded for now. We should adjust as necessary.

            top += 1;

            height -= 4;

            left += indentLeft;

            width -= (indentLeft + buttonWidth);

        }

        c.setFont(rendererPane.getFont());

        if (buttonModel.isArmed() && buttonModel.isPressed()) {

            if (isOpaque()) {

                c.setBackground(UIManager.getColor("Button.select"));

            }

            c.setForeground(comboBox.getForeground());

        } else if (!comboBox.isEnabled()) {

            if (isOpaque()) {

                c.setBackground(UIManager.getColor("ComboBox.disabledBackground"));

            }

            c.setForeground(UIManager.getColor("ComboBox.disabledForeground"));

        } else {

            c.setForeground(comboBox.getForeground());

            c.setBackground(comboBox.getBackground());

        }

        // Sun Fix for 4238829: should lay out the JPanel.

        boolean shouldValidate = false;

        if (c instanceof JPanel) {

            shouldValidate = true;

        }

        final int iconWidth = 0;

        final int cWidth = width - (insets.right + iconWidth);

        // fix for 3156483 we need to crop images that are too big.

        // if (height > 18)

        // always crop.

        {

            top = height / 2 - 8;

            height = 19;

        }

        // It doesn't need to draw its background, we handled it

        final Color bg = c.getBackground();

        final boolean inhibitBackground = bg instanceof UIResource;

        if (inhibitBackground) c.setBackground(new Color(0, 0, 0, 0));

        rendererPane.paintComponent(g, c, this, left, top, cWidth, height, shouldValidate); // h - (insets.top + insets.bottom) );

        if (inhibitBackground) c.setBackground(bg);

    }

}