Version 0.6.222, Fix the bug of X.TextRange.

[pettanr/clientJs.git] / 0.6.x / js / 01_core / 18_FocusUtility.js

diff --git a/0.6.x/js/01_core/18_FocusUtility.js b/0.6.x/js/01_core/18_FocusUtility.js
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+++ b/0.6.x/js/01_core/18_FocusUtility.js
@@ -0,0 +1,53 @@
+
+
+var FocusUtility_lastElmFocused;
+var FocusUtility_docActiveElmSupport = X_UA[ 'IE' ] || document.activeElement !== undefined;
+var FocusUtility_fixActiveElm;
+
+// http://www.codingforums.com/javascript-programming/19503-determining-focus-ns6-ie6-context-sensitive-help.html
+// https://developer.mozilla.org/ja/docs/Web/API/Document/activeElement
+// IE 4+, Chrome 2+, Safari 4+, Firefox 3+ Opera 9.6+
+
+function FocusUtility_getFocusedElement(){
+       return FocusUtility_fixActiveElm ||
+               (
+                       X_Script_gte15 ?
+                               X_Script_try( X_Object_find, [ document, 'activeElement' ] ) :
+                               // ieは iframe 内で focus がない場合に activeElement に触ると エラーになる
+                               // VBS 経由で activeElement に触り安全確認する
+                               ( window[ 'vbs_testAE' ]() && document.activeElement )
+               );
+};
+
+/*
+ * 通常の focus は xnode.call('focus') を使う.
+ * フレームワーク内部で API の実行のために一時的に focus を当てたい場合に使う.focus の復帰は自動で行われる
+ */
+function FocusUtility_setTemporarilyFocus( elm ){
+       var elmActive = FocusUtility_getFocusedElement();
+       
+       if( elmActive !== elm ){
+               X_EventDispatcher_ignoreActualEvent = true; // ignoreAllEvent focus, blur
+               elm.focus();
+               X_EventDispatcher_ignoreActualEvent = false;
+               if( !FocusUtility_lastElmFocused ){
+                       FocusUtility_lastElmFocused = elmActive;
+                       // ie5(IE11のエミュレーション) でしばしば空なんですけど...
+                       elmActive && ExecuteAtEnd_add( FocusUtility_restoreFocus );
+               };
+       };
+};
+
+// こっそり復帰
+function FocusUtility_restoreFocus(){
+       var elmActive = FocusUtility_getFocusedElement(),
+               elm = FocusUtility_lastElmFocused;
+
+       if( elmActive !== elm ){
+               X_EventDispatcher_ignoreActualEvent = true;
+               elm.focus();
+               X_EventDispatcher_ignoreActualEvent = false;
+       };
+       FocusUtility_lastElmFocused = null;
+};
+