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1 /* |
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2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 package sun.awt.motif; |
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27 |
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28 import java.awt.*; |
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29 import java.awt.dnd.DropTarget; |
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30 import java.awt.dnd.DropTargetListener; |
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31 import java.awt.event.*; |
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32 import java.awt.image.ColorModel; |
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33 import java.awt.image.ImageObserver; |
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34 import java.awt.image.ImageProducer; |
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35 import java.awt.image.VolatileImage; |
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36 import java.awt.peer.*; |
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37 import sun.awt.*; |
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38 import sun.awt.motif.X11FontMetrics; |
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39 import java.lang.reflect.*; |
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40 import java.util.logging.*; |
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41 import java.util.*; |
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42 |
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43 // FIXME: Add X errors handling |
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44 // FIXME: Add chaining of parameters to XEmbed-client if we are both(accelerators; XDND; focus already automatically) |
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45 public class MEmbedCanvasPeer extends MCanvasPeer implements WindowFocusListener, KeyEventPostProcessor, ModalityListener, WindowIDProvider { |
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46 private static final Logger xembedLog = Logger.getLogger("sun.awt.motif.xembed.MEmbedCanvasPeer"); |
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47 |
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48 final static int XEMBED_VERSION = 0, |
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49 XEMBED_MAPPED = (1 << 0); |
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50 /* XEMBED messages */ |
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51 final static int XEMBED_EMBEDDED_NOTIFY = 0; |
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52 final static int XEMBED_WINDOW_ACTIVATE = 1; |
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53 final static int XEMBED_WINDOW_DEACTIVATE = 2; |
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54 final static int XEMBED_REQUEST_FOCUS =3; |
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55 final static int XEMBED_FOCUS_IN = 4; |
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56 final static int XEMBED_FOCUS_OUT = 5; |
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57 final static int XEMBED_FOCUS_NEXT = 6; |
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58 final static int XEMBED_FOCUS_PREV = 7; |
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59 /* 8-9 were used for XEMBED_GRAB_KEY/XEMBED_UNGRAB_KEY */ |
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60 final static int XEMBED_GRAB_KEY = 8; |
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61 final static int XEMBED_UNGRAB_KEY = 9; |
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62 final static int XEMBED_MODALITY_ON = 10; |
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63 final static int XEMBED_MODALITY_OFF = 11; |
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64 final static int XEMBED_REGISTER_ACCELERATOR = 12; |
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65 final static int XEMBED_UNREGISTER_ACCELERATOR= 13; |
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66 final static int XEMBED_ACTIVATE_ACCELERATOR = 14; |
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67 |
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68 final static int NON_STANDARD_XEMBED_GTK_GRAB_KEY = 108; |
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69 final static int NON_STANDARD_XEMBED_GTK_UNGRAB_KEY = 109; |
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70 |
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71 // A detail code is required for XEMBED_FOCUS_IN. The following values are valid: |
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72 /* Details for XEMBED_FOCUS_IN: */ |
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73 final static int XEMBED_FOCUS_CURRENT = 0; |
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74 final static int XEMBED_FOCUS_FIRST = 1; |
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75 final static int XEMBED_FOCUS_LAST = 2; |
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76 |
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77 // Modifiers bits |
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78 final static int XEMBED_MODIFIER_SHIFT = (1 << 0); |
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79 final static int XEMBED_MODIFIER_CONTROL = (1 << 1); |
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80 final static int XEMBED_MODIFIER_ALT = (1 << 2); |
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81 final static int XEMBED_MODIFIER_SUPER = (1 << 3); |
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82 final static int XEMBED_MODIFIER_HYPER = (1 << 4); |
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83 |
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84 boolean applicationActive; // Whether the application is active(has focus) |
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85 Map<Long, AWTKeyStroke> accelerators = new HashMap<Long, AWTKeyStroke>(); // Maps accelerator ID into AWTKeyStroke |
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86 Map<AWTKeyStroke, Long> accel_lookup = new HashMap<AWTKeyStroke, Long>(); // Maps AWTKeyStroke into accelerator ID |
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87 Set<GrabbedKey> grabbed_keys = new HashSet<GrabbedKey>(); // A set of keys grabbed by client |
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88 Object ACCEL_LOCK = accelerators; // Lock object for working with accelerators; |
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89 Object GRAB_LOCK = grabbed_keys; // Lock object for working with keys grabbed by client |
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90 |
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91 MEmbedCanvasPeer() {} |
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92 |
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93 MEmbedCanvasPeer(Component target) { |
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94 super(target); |
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95 } |
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96 |
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97 void initialize() { |
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98 super.initialize(); |
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99 |
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100 installActivateListener(); |
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101 installAcceleratorListener(); |
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102 installModalityListener(); |
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103 |
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104 // XEmbed canvas should be non-traversable. |
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105 // FIXME: Probably should be removed and enforced setting of it by the users |
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106 target.setFocusTraversalKeysEnabled(false); |
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107 |
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108 initXEmbedServer(); |
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109 } |
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110 |
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111 void installModalityListener() { |
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112 ((SunToolkit)Toolkit.getDefaultToolkit()).addModalityListener(this); |
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113 } |
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114 |
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115 void deinstallModalityListener() { |
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116 ((SunToolkit)Toolkit.getDefaultToolkit()).removeModalityListener(this); |
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117 } |
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118 |
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119 void installAcceleratorListener() { |
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120 KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventPostProcessor(this); |
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121 } |
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122 |
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123 void deinstallAcceleratorListener() { |
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124 KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventPostProcessor(this); |
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125 } |
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126 |
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127 void installActivateListener() { |
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128 // FIXME: should watch for hierarchy changes |
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129 Window toplevel = getTopLevel(target); |
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130 if (toplevel != null) { |
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131 toplevel.addWindowFocusListener(this); |
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132 applicationActive = toplevel.isFocused(); |
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133 } |
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134 } |
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135 |
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136 void deinstallActivateListener() { |
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137 Window toplevel = getTopLevel(target); |
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138 if (toplevel != null) { |
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139 toplevel.removeWindowFocusListener(this); |
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140 } |
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141 } |
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142 |
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143 native boolean isXEmbedActive(); |
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144 |
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145 boolean isApplicationActive() { |
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146 return applicationActive; |
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147 } |
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148 |
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149 native void initDispatching(); |
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150 |
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151 native void endDispatching(); |
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152 |
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153 native void embedChild(long child); |
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154 |
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155 native void childDestroyed(); |
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156 |
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157 public void handleEvent(AWTEvent e) { |
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158 super.handleEvent(e); |
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159 if (isXEmbedActive()) { |
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160 switch (e.getID()) { |
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161 case FocusEvent.FOCUS_GAINED: |
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162 canvasFocusGained((FocusEvent)e); |
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163 break; |
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164 case FocusEvent.FOCUS_LOST: |
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165 canvasFocusLost((FocusEvent)e); |
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166 break; |
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167 case KeyEvent.KEY_PRESSED: |
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168 case KeyEvent.KEY_RELEASED: |
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169 if (!((InputEvent)e).isConsumed()) { |
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170 forwardKeyEvent((KeyEvent)e); |
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171 } |
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172 break; |
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173 } |
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174 } |
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175 } |
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176 |
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177 public Dimension getPreferredSize() { |
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178 if (isXEmbedActive()) { |
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179 Dimension dim = getEmbedPreferredSize(); |
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180 if (dim == null) { |
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181 return super.getPreferredSize(); |
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182 } else { |
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183 return dim; |
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184 } |
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185 } else { |
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186 return super.getPreferredSize(); |
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187 } |
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188 } |
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189 native Dimension getEmbedPreferredSize(); |
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190 public Dimension getMinimumSize() { |
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191 if (isXEmbedActive()) { |
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192 Dimension dim = getEmbedMinimumSize(); |
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193 if (dim == null) { |
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194 return super.getMinimumSize(); |
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195 } else { |
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196 return dim; |
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197 } |
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198 } else { |
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199 return super.getMinimumSize(); |
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200 } |
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201 } |
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202 native Dimension getEmbedMinimumSize(); |
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203 protected void disposeImpl() { |
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204 if (isXEmbedActive()) { |
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205 detachChild(); |
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206 } |
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207 deinstallActivateListener(); |
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208 deinstallModalityListener(); |
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209 deinstallAcceleratorListener(); |
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210 |
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211 destroyXEmbedServer(); |
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212 super.disposeImpl(); |
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213 } |
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214 |
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215 public boolean isFocusable() { |
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216 return true; |
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217 } |
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218 |
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219 Window getTopLevel(Component comp) { |
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220 while (comp != null && !(comp instanceof Window)) { |
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221 comp = comp.getParent(); |
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222 } |
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223 return (Window)comp; |
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224 } |
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225 |
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226 native Rectangle getClientBounds(); |
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227 |
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228 void childResized() { |
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229 if (xembedLog.isLoggable(Level.FINER)) { |
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230 Rectangle bounds = getClientBounds(); |
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231 xembedLog.finer("Child resized: " + bounds); |
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232 // It is not required to update embedder's size when client size changes |
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233 // However, since there is no any means to get client size it seems to be the |
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234 // only way to provide it. However, it contradicts with Java layout concept - |
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235 // so it is disabled for now. |
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236 // Rectangle my_bounds = getBounds(); |
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237 // setBounds(my_bounds.x, my_bounds.y, bounds.width, bounds.height, SET_BOUNDS); |
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238 } |
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239 postEvent(new ComponentEvent(target, ComponentEvent.COMPONENT_RESIZED)); |
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240 } |
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241 |
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242 void focusNext() { |
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243 if (isXEmbedActive()) { |
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244 xembedLog.fine("Requesting focus for the next component after embedder"); |
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245 postEvent(new InvocationEvent(target, new Runnable() { |
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246 public void run() { |
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247 KeyboardFocusManager.getCurrentKeyboardFocusManager().focusNextComponent(target); |
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248 } |
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249 })); |
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250 } else { |
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251 xembedLog.fine("Application is not active - denying focus next"); |
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252 } |
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253 } |
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254 |
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255 void focusPrev() { |
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256 if (isXEmbedActive()) { |
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257 xembedLog.fine("Requesting focus for the next component after embedder"); |
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258 postEvent(new InvocationEvent(target, new Runnable() { |
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259 public void run() { |
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260 KeyboardFocusManager.getCurrentKeyboardFocusManager().focusPreviousComponent(target); |
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261 } |
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262 })); |
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263 } else { |
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264 xembedLog.fine("Application is not active - denying focus prev"); |
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265 } |
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266 } |
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267 |
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268 void requestXEmbedFocus() { |
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269 if (isXEmbedActive()) { |
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270 xembedLog.fine("Requesting focus for client"); |
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271 postEvent(new InvocationEvent(target, new Runnable() { |
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272 public void run() { |
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273 target.requestFocusInWindow(); |
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274 } |
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275 })); |
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276 } else { |
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277 xembedLog.fine("Application is not active - denying request focus"); |
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278 } |
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279 } |
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280 |
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281 native void notifyChildEmbedded(); |
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282 |
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283 native void detachChild(); |
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284 |
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285 public void windowGainedFocus(WindowEvent e) { |
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286 applicationActive = true; |
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287 if (isXEmbedActive()) { |
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288 xembedLog.fine("Sending WINDOW_ACTIVATE"); |
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289 sendMessage(XEMBED_WINDOW_ACTIVATE); |
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290 } |
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291 } |
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292 |
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293 public void windowLostFocus(WindowEvent e) { |
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294 applicationActive = false; |
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295 if (isXEmbedActive()) { |
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296 xembedLog.fine("Sending WINDOW_DEACTIVATE"); |
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297 sendMessage(XEMBED_WINDOW_DEACTIVATE); |
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298 } |
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299 } |
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300 |
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301 void canvasFocusGained(FocusEvent e) { |
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302 if (isXEmbedActive()) { |
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303 xembedLog.fine("Forwarding FOCUS_GAINED"); |
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304 int flavor = XEMBED_FOCUS_CURRENT; |
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305 if (e instanceof CausedFocusEvent) { |
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306 CausedFocusEvent ce = (CausedFocusEvent)e; |
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307 if (ce.getCause() == CausedFocusEvent.Cause.TRAVERSAL_FORWARD) { |
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308 flavor = XEMBED_FOCUS_FIRST; |
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309 } else if (ce.getCause() == CausedFocusEvent.Cause.TRAVERSAL_BACKWARD) { |
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310 flavor = XEMBED_FOCUS_LAST; |
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311 } |
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312 } |
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313 sendMessage(XEMBED_FOCUS_IN, flavor, 0, 0); |
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314 } |
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315 } |
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316 |
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317 void canvasFocusLost(FocusEvent e) { |
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318 if (isXEmbedActive() && !e.isTemporary()) { |
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319 xembedLog.fine("Forwarding FOCUS_LOST"); |
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320 Component opp = e.getOppositeComponent(); |
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321 int num = 0; |
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322 try { |
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323 num = Integer.parseInt(opp.getName()); |
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324 } catch (NumberFormatException nfe) { |
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325 } |
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326 sendMessage(XEMBED_FOCUS_OUT, num, 0, 0); |
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327 } |
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328 } |
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329 |
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330 native void forwardKeyEvent(KeyEvent e); |
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331 |
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332 void grabKey(final long keysym, final long modifiers) { |
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333 postEvent(new InvocationEvent(target, new Runnable() { |
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334 public void run() { |
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335 GrabbedKey grab = new GrabbedKey(keysym, modifiers); |
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336 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Grabbing key: " + grab); |
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337 synchronized(GRAB_LOCK) { |
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338 grabbed_keys.add(grab); |
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339 } |
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340 } |
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341 })); |
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342 } |
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343 |
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344 void ungrabKey(final long keysym, final long modifiers) { |
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345 postEvent(new InvocationEvent(target, new Runnable() { |
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346 public void run() { |
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347 GrabbedKey grab = new GrabbedKey(keysym, modifiers); |
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348 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("UnGrabbing key: " + grab); |
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349 synchronized(GRAB_LOCK) { |
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350 grabbed_keys.remove(grab); |
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351 } |
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352 } |
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353 })); |
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354 } |
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355 |
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356 void registerAccelerator(final long accel_id, final long keysym, final long modifiers) { |
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357 postEvent(new InvocationEvent(target, new Runnable() { |
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358 public void run() { |
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359 AWTKeyStroke stroke = getKeyStrokeForKeySym(keysym, modifiers); |
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360 if (stroke != null) { |
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361 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Registering accelerator " + accel_id + " for " + stroke); |
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362 synchronized(ACCEL_LOCK) { |
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363 accelerators.put(accel_id, stroke); |
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364 accel_lookup.put(stroke, accel_id); |
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365 } |
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366 } |
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367 // Propogate accelerators to the another embedder |
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368 propogateRegisterAccelerator(stroke); |
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369 } |
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370 })); |
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371 } |
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372 |
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373 void unregisterAccelerator(final long accel_id) { |
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374 postEvent(new InvocationEvent(target, new Runnable() { |
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375 public void run() { |
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376 AWTKeyStroke stroke = null; |
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377 synchronized(ACCEL_LOCK) { |
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378 stroke = accelerators.get(accel_id); |
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379 if (stroke != null) { |
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380 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Unregistering accelerator: " + accel_id); |
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381 accelerators.remove(accel_id); |
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382 accel_lookup.remove(stroke); // FIXME: How about several accelerators with the same stroke? |
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383 } |
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384 } |
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385 // Propogate accelerators to the another embedder |
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386 propogateUnRegisterAccelerator(stroke); |
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387 } |
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388 })); |
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389 } |
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390 |
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391 void propogateRegisterAccelerator(AWTKeyStroke stroke) { |
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392 // Find the top-level and see if it is XEmbed client. If so, ask him to |
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393 // register the accelerator |
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394 MWindowPeer parent = getParentWindow(); |
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395 if (parent != null && parent instanceof MEmbeddedFramePeer) { |
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396 MEmbeddedFramePeer embedded = (MEmbeddedFramePeer)parent; |
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397 embedded.registerAccelerator(stroke); |
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398 } |
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399 } |
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400 |
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401 void propogateUnRegisterAccelerator(AWTKeyStroke stroke) { |
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402 // Find the top-level and see if it is XEmbed client. If so, ask him to |
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403 // register the accelerator |
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404 MWindowPeer parent = getParentWindow(); |
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405 if (parent != null && parent instanceof MEmbeddedFramePeer) { |
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406 MEmbeddedFramePeer embedded = (MEmbeddedFramePeer)parent; |
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407 embedded.unregisterAccelerator(stroke); |
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408 } |
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409 } |
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410 |
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411 public boolean postProcessKeyEvent(KeyEvent e) { |
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412 // Processing events only if we are in the focused window. |
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413 MWindowPeer parent = getParentWindow(); |
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414 if (parent == null || !((Window)parent.target).isFocused() || target.isFocusOwner()) { |
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415 return false; |
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416 } |
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417 |
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418 boolean result = false; |
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419 |
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420 if (xembedLog.isLoggable(Level.FINER)) xembedLog.finer("Post-processing event " + e); |
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421 |
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422 // Process ACCELERATORS |
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423 AWTKeyStroke stroke = AWTKeyStroke.getAWTKeyStrokeForEvent(e); |
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424 long accel_id = 0; |
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425 boolean exists = false; |
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426 synchronized(ACCEL_LOCK) { |
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427 exists = accel_lookup.containsKey(stroke); |
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428 if (exists) { |
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429 accel_id = accel_lookup.get(stroke).longValue(); |
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430 } |
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431 } |
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432 if (exists) { |
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433 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Activating accelerator " + accel_id); |
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434 sendMessage(XEMBED_ACTIVATE_ACCELERATOR, accel_id, 0, 0); // FIXME: How about overloaded? |
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435 result = true; |
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436 } |
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437 |
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438 // Process Grabs, unofficial GTK feature |
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439 exists = false; |
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440 GrabbedKey key = new GrabbedKey(e); |
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441 synchronized(GRAB_LOCK) { |
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442 exists = grabbed_keys.contains(key); |
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443 } |
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444 if (exists) { |
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445 if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Forwarding grabbed key " + e); |
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446 forwardKeyEvent(e); |
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447 result = true; |
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448 } |
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449 |
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450 return result; |
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451 } |
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452 |
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453 public void modalityPushed(ModalityEvent ev) { |
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454 sendMessage(XEMBED_MODALITY_ON); |
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455 } |
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456 |
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457 public void modalityPopped(ModalityEvent ev) { |
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458 sendMessage(XEMBED_MODALITY_OFF); |
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459 } |
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460 |
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461 int getModifiers(int state) { |
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462 int mods = 0; |
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463 if ((state & XEMBED_MODIFIER_SHIFT) != 0) { |
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464 mods |= InputEvent.SHIFT_DOWN_MASK; |
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465 } |
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466 if ((state & XEMBED_MODIFIER_CONTROL) != 0) { |
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467 mods |= InputEvent.CTRL_DOWN_MASK; |
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468 } |
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469 if ((state & XEMBED_MODIFIER_ALT) != 0) { |
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470 mods |= InputEvent.ALT_DOWN_MASK; |
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471 } |
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472 // FIXME: What is super/hyper? |
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473 // FIXME: Experiments show that SUPER is ALT. So what is Alt then? |
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474 if ((state & XEMBED_MODIFIER_SUPER) != 0) { |
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475 mods |= InputEvent.ALT_DOWN_MASK; |
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476 } |
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477 // if ((state & XEMBED_MODIFIER_HYPER) != 0) { |
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478 // mods |= InputEvent.DOWN_MASK; |
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479 // } |
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480 return mods; |
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481 } |
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482 |
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483 // Shouldn't be called on Toolkit thread. |
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484 AWTKeyStroke getKeyStrokeForKeySym(long keysym, long state) { |
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485 |
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486 int keycode = getAWTKeyCodeForKeySym((int)keysym); |
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487 int modifiers = getModifiers((int)state); |
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488 return AWTKeyStroke.getAWTKeyStroke(keycode, modifiers); |
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489 } |
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490 native int getAWTKeyCodeForKeySym(int keysym); |
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491 native void sendMessage(int msg); |
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492 native void sendMessage(int msg, long detail, long data1, long data2); |
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493 MWindowPeer getParentWindow() { |
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494 Component parent = target.getParent(); |
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495 synchronized(target.getTreeLock()) { |
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496 while (parent != null && !(parent.getPeer() instanceof MWindowPeer)) { |
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497 parent = parent.getParent(); |
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498 } |
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499 return (parent != null)?(MWindowPeer)parent.getPeer():null; |
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500 } |
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501 } |
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502 |
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503 private static class XEmbedDropTarget extends DropTarget { |
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504 public void addDropTargetListener(DropTargetListener dtl) |
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505 throws TooManyListenersException { |
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506 // Drop target listeners registered with this target will never be |
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507 // notified, since all drag notifications are routed to the XEmbed |
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508 // client. To avoid confusion we prohibit listeners registration |
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509 // by throwing TooManyListenersException as if there is a listener |
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510 // registered with this target already. |
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511 throw new TooManyListenersException(); |
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512 } |
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513 } |
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514 |
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515 public void setXEmbedDropTarget() { |
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516 // Register a drop site on the top level. |
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517 Runnable r = new Runnable() { |
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518 public void run() { |
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519 target.setDropTarget(new XEmbedDropTarget()); |
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520 } |
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521 }; |
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522 SunToolkit.executeOnEventHandlerThread(target, r); |
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523 } |
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524 |
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525 public void removeXEmbedDropTarget() { |
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526 // Unregister a drop site on the top level. |
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527 Runnable r = new Runnable() { |
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528 public void run() { |
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529 if (target.getDropTarget() instanceof XEmbedDropTarget) { |
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530 target.setDropTarget(null); |
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531 } |
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532 } |
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533 }; |
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534 SunToolkit.executeOnEventHandlerThread(target, r); |
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535 } |
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536 |
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537 public boolean processXEmbedDnDEvent(long ctxt, int eventID) { |
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538 if (target.getDropTarget() instanceof XEmbedDropTarget) { |
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539 forwardEventToEmbedded(ctxt, eventID); |
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540 return true; |
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541 } else { |
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542 return false; |
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543 } |
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544 } |
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545 |
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546 native void forwardEventToEmbedded(long ctxt, int eventID); |
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547 native void initXEmbedServer(); |
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548 native void destroyXEmbedServer(); |
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549 public native long getWindow(); |
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550 } |
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551 class GrabbedKey { |
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552 long keysym; |
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553 long modifiers; |
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554 GrabbedKey(long keysym, long modifiers) { |
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555 this.keysym = keysym; |
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556 this.modifiers = modifiers; |
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557 } |
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558 |
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559 GrabbedKey(KeyEvent ev) { |
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560 init(ev); |
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561 } |
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562 |
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563 native void initKeySymAndModifiers(KeyEvent e); |
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564 |
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565 private void init(KeyEvent e) { |
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566 initKeySymAndModifiers(e); |
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567 } |
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568 |
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569 public int hashCode() { |
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570 return (int)keysym & 0xFFFFFFFF; |
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571 } |
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572 |
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573 public boolean equals(Object o) { |
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574 if (!(o instanceof GrabbedKey)) { |
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575 return false; |
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576 } |
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577 GrabbedKey key = (GrabbedKey)o; |
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578 return (keysym == key.keysym && modifiers == key.modifiers); |
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579 } |
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580 |
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581 public String toString() { |
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582 return "Key combination[keysym=" + keysym + ", mods=" + modifiers + "]"; |
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583 } |
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584 } |