1 /* |
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2 * Copyright 2000-2003 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 #ifdef HEADLESS |
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26 #error This file should not be included in headless library |
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27 #endif |
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28 |
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29 #include "awt_p.h" |
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30 #include "jni.h" |
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31 #include "jni_util.h" |
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32 |
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33 #include "awt_KeyboardFocusManager.h" |
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34 #include "java_awt_KeyboardFocusManager.h" |
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35 #include "java_awt_event_FocusEvent.h" |
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36 #include "awt_Component.h" |
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37 #include "canvas.h" |
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38 #include "awt_MToolkit.h" |
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39 |
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40 extern struct MComponentPeerIDs mComponentPeerIDs; |
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41 |
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42 struct KeyboardFocusManagerIDs keyboardFocusManagerIDs; |
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43 |
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44 /* |
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45 * Class: java_awt_KeyboardFocusManager |
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46 * Method: initIDs |
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47 * Signature: ()V |
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48 */ |
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49 JNIEXPORT void JNICALL |
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50 Java_java_awt_KeyboardFocusManager_initIDs |
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51 (JNIEnv *env, jclass cls) |
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52 { |
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53 jclass keyclass = NULL; |
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54 |
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55 keyboardFocusManagerIDs.keyboardFocusManagerCls = (jclass) |
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56 (*env)->NewGlobalRef(env, cls); |
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57 keyboardFocusManagerIDs.shouldNativelyFocusHeavyweightMID = |
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58 (*env)->GetStaticMethodID(env, cls, "shouldNativelyFocusHeavyweight", |
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59 "(Ljava/awt/Component;Ljava/awt/Component;ZZJLsun/awt/CausedFocusEvent$Cause;)I"); |
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60 keyboardFocusManagerIDs.heavyweightButtonDownMID = |
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61 (*env)->GetStaticMethodID(env, cls, "heavyweightButtonDown", |
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62 "(Ljava/awt/Component;J)V"); |
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63 keyboardFocusManagerIDs.heavyweightButtonDownZMID = |
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64 (*env)->GetStaticMethodID(env, cls, "heavyweightButtonDown", |
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65 "(Ljava/awt/Component;JZ)V"); |
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66 keyboardFocusManagerIDs.markClearGlobalFocusOwnerMID = |
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67 (*env)->GetStaticMethodID(env, cls, "markClearGlobalFocusOwner", |
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68 "()Ljava/awt/Window;"); |
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69 |
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70 keyboardFocusManagerIDs.processSynchronousTransferMID = |
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71 (*env)->GetStaticMethodID(env, cls, "processSynchronousLightweightTransfer", |
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72 "(Ljava/awt/Component;Ljava/awt/Component;ZZJ)Z"); |
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73 |
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74 keyclass = (*env)->FindClass(env, "java/awt/event/KeyEvent"); |
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75 DASSERT (keyclass != NULL); |
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76 |
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77 keyboardFocusManagerIDs.isProxyActive = |
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78 (*env)->GetFieldID(env, keyclass, "isProxyActive", |
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79 "Z"); |
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80 |
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81 (*env)->DeleteLocalRef(env, keyclass); |
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82 |
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83 DASSERT(keyboardFocusManagerIDs.keyboardFocusManagerCls != NULL); |
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84 DASSERT(keyboardFocusManagerIDs.shouldNativelyFocusHeavyweightMID != |
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85 NULL); |
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86 DASSERT(keyboardFocusManagerIDs.heavyweightButtonDownMID != NULL); |
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87 DASSERT(keyboardFocusManagerIDs.heavyweightButtonDownZMID != NULL); |
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88 DASSERT(keyboardFocusManagerIDs.markClearGlobalFocusOwnerMID != NULL); |
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89 DASSERT(keyboardFocusManagerIDs.processSynchronousTransferMID != NULL); |
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90 } |
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91 |
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92 /* |
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93 * Class: java_awt_KeyboardFocusManager |
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94 * Method: getNativeFocusOwner |
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95 * Signature: ()Ljava/awt/Component; |
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96 */ |
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97 JNIEXPORT jobject JNICALL |
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98 Java_sun_awt_KeyboardFocusManagerPeerImpl_getNativeFocusOwner |
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99 (JNIEnv *env, jclass cls) |
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100 { |
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101 jobject l_peer; |
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102 |
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103 AWT_LOCK(); |
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104 l_peer = awt_canvas_getFocusOwnerPeer(); |
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105 AWT_UNLOCK(); |
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106 |
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107 return (l_peer != NULL) |
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108 ? (*env)->GetObjectField(env, l_peer, mComponentPeerIDs.target) |
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109 : NULL; |
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110 } |
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111 |
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112 /* |
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113 * Class: java_awt_KeyboardFocusManager |
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114 * Method: getNativeFocusedWindow |
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115 * Signature: ()Ljava/awt/Window; |
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116 */ |
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117 JNIEXPORT jobject JNICALL |
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118 Java_sun_awt_KeyboardFocusManagerPeerImpl_getNativeFocusedWindow |
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119 (JNIEnv *env, jclass cls) |
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120 { |
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121 jobject l_peer; |
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122 |
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123 AWT_LOCK(); |
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124 l_peer = awt_canvas_getFocusedWindowPeer(); |
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125 AWT_UNLOCK(); |
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126 |
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127 return (l_peer != NULL) |
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128 ? (*env)->GetObjectField(env, l_peer, mComponentPeerIDs.target) |
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129 : NULL; |
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130 } |
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131 |
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132 /* |
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133 * Class: java_awt_KeyboardFocusManager |
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134 * Method: clearGlobalFocusOwner |
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135 * Signature: ()V |
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136 */ |
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137 JNIEXPORT void JNICALL |
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138 Java_sun_awt_KeyboardFocusManagerPeerImpl_clearNativeGlobalFocusOwner |
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139 (JNIEnv *env, jobject self, jobject activeWindow) |
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140 { |
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141 /* Redirect focus to the focus proxy of the active Window. The effect |
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142 we want is for the active Window to remain active, but for none of |
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143 its children to be the focus owner. AWT maintains state to know |
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144 that any key events delivered after this call (but before focus is |
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145 re-established elsewhere) get ignored. */ |
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146 |
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147 Widget proxy; |
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148 |
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149 if ((*env)->EnsureLocalCapacity(env, 1) < 0) { |
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150 return; |
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151 } |
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152 |
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153 AWT_LOCK(); |
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154 |
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155 if (activeWindow != NULL) { |
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156 // Setting focus owner to proxy will be equivalent to having |
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157 // null focus owner in Java layer while we will still be |
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158 // able to receive key events. |
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159 proxy = findWindowsProxy(activeWindow, env); |
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160 |
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161 if (proxy != NULL) { |
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162 Widget curFocusWidget = XmGetFocusWidget(proxy); |
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163 if (curFocusWidget != NULL) { |
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164 callFocusHandler(curFocusWidget, FocusOut, NULL); |
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165 } |
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166 |
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167 // Disable all but proxy widgets |
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168 processTree(curFocusWidget, proxy, False); |
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169 |
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170 XmProcessTraversal(proxy, XmTRAVERSE_CURRENT); |
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171 } |
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172 } |
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173 |
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174 AWT_UNLOCK(); |
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175 } |
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