EventManager-more.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:10k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.EventManager
- */
- Ext.apply(Ext.EventManager, function(){
- var resizeEvent,
- resizeTask,
- textEvent,
- textSize,
- D = Ext.lib.Dom,
- E = Ext.lib.Event,
- propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate)$/,
- curWidth = 0,
- curHeight = 0,
- // note 1: IE fires ONLY the keydown event on specialkey autorepeat
- // note 2: Safari < 3.1, Gecko (Mac/Linux) & Opera fire only the keypress event on specialkey autorepeat
- // (research done by @Jan Wolter at http://unixpapa.com/js/key.html)
- useKeydown = Ext.isSafari ?
- Ext.num(navigator.userAgent.toLowerCase().match(/version/(d+.d)/)[1] || 2) >= 3.1 :
- !((Ext.isGecko && !Ext.isWindows) || Ext.isOpera);
- return {
- // private
- doResizeEvent: function(){
- var h = D.getViewHeight(),
- w = D.getViewWidth();
- //whacky problem in IE where the resize event will fire even though the w/h are the same.
- if(curHeight != h || curWidth != w){
- resizeEvent.fire(curWidth = w, curHeight = h);
- }
- },
- /**
- * Fires when the window is resized and provides resize event buffering (50 milliseconds), passes new viewport width and height to handlers.
- * @param {Function} fn The method the event invokes
- * @param {Object} scope An object that becomes the scope of the handler
- * @param {boolean} options
- */
- onWindowResize : function(fn, scope, options){
- if(!resizeEvent){
- resizeEvent = new Ext.util.Event();
- resizeTask = new Ext.util.DelayedTask(this.doResizeEvent);
- E.on(window, "resize", this.fireWindowResize, this);
- }
- resizeEvent.addListener(fn, scope, options);
- },
- // exposed only to allow manual firing
- fireWindowResize : function(){
- if(resizeEvent){
- if((Ext.isIE||Ext.isAir) && resizeTask){
- resizeTask.delay(50);
- }else{
- resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
- }
- }
- },
- /**
- * Fires when the user changes the active text size. Handler gets called with 2 params, the old size and the new size.
- * @param {Function} fn The method the event invokes
- * @param {Object} scope An object that becomes the scope of the handler
- * @param {boolean} options
- */
- onTextResize : function(fn, scope, options){
- if(!textEvent){
- textEvent = new Ext.util.Event();
- var textEl = new Ext.Element(document.createElement('div'));
- textEl.dom.className = 'x-text-resize';
- textEl.dom.innerHTML = 'X';
- textEl.appendTo(document.body);
- textSize = textEl.dom.offsetHeight;
- setInterval(function(){
- if(textEl.dom.offsetHeight != textSize){
- textEvent.fire(textSize, textSize = textEl.dom.offsetHeight);
- }
- }, this.textResizeInterval);
- }
- textEvent.addListener(fn, scope, options);
- },
- /**
- * Removes the passed window resize listener.
- * @param {Function} fn The method the event invokes
- * @param {Object} scope The scope of handler
- */
- removeResizeListener : function(fn, scope){
- if(resizeEvent){
- resizeEvent.removeListener(fn, scope);
- }
- },
- // private
- fireResize : function(){
- if(resizeEvent){
- resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
- }
- },
- /**
- * The frequency, in milliseconds, to check for text resize events (defaults to 50)
- */
- textResizeInterval : 50,
- /**
- * Url used for onDocumentReady with using SSL (defaults to Ext.SSL_SECURE_URL)
- */
- ieDeferSrc : false,
- // protected for use inside the framework
- // detects whether we should use keydown or keypress based on the browser.
- useKeydown: useKeydown
- };
- }());
- Ext.EventManager.on = Ext.EventManager.addListener;
- Ext.apply(Ext.EventObjectImpl.prototype, {
- /** Key constant @type Number */
- BACKSPACE: 8,
- /** Key constant @type Number */
- TAB: 9,
- /** Key constant @type Number */
- NUM_CENTER: 12,
- /** Key constant @type Number */
- ENTER: 13,
- /** Key constant @type Number */
- RETURN: 13,
- /** Key constant @type Number */
- SHIFT: 16,
- /** Key constant @type Number */
- CTRL: 17,
- CONTROL : 17, // legacy
- /** Key constant @type Number */
- ALT: 18,
- /** Key constant @type Number */
- PAUSE: 19,
- /** Key constant @type Number */
- CAPS_LOCK: 20,
- /** Key constant @type Number */
- ESC: 27,
- /** Key constant @type Number */
- SPACE: 32,
- /** Key constant @type Number */
- PAGE_UP: 33,
- PAGEUP : 33, // legacy
- /** Key constant @type Number */
- PAGE_DOWN: 34,
- PAGEDOWN : 34, // legacy
- /** Key constant @type Number */
- END: 35,
- /** Key constant @type Number */
- HOME: 36,
- /** Key constant @type Number */
- LEFT: 37,
- /** Key constant @type Number */
- UP: 38,
- /** Key constant @type Number */
- RIGHT: 39,
- /** Key constant @type Number */
- DOWN: 40,
- /** Key constant @type Number */
- PRINT_SCREEN: 44,
- /** Key constant @type Number */
- INSERT: 45,
- /** Key constant @type Number */
- DELETE: 46,
- /** Key constant @type Number */
- ZERO: 48,
- /** Key constant @type Number */
- ONE: 49,
- /** Key constant @type Number */
- TWO: 50,
- /** Key constant @type Number */
- THREE: 51,
- /** Key constant @type Number */
- FOUR: 52,
- /** Key constant @type Number */
- FIVE: 53,
- /** Key constant @type Number */
- SIX: 54,
- /** Key constant @type Number */
- SEVEN: 55,
- /** Key constant @type Number */
- EIGHT: 56,
- /** Key constant @type Number */
- NINE: 57,
- /** Key constant @type Number */
- A: 65,
- /** Key constant @type Number */
- B: 66,
- /** Key constant @type Number */
- C: 67,
- /** Key constant @type Number */
- D: 68,
- /** Key constant @type Number */
- E: 69,
- /** Key constant @type Number */
- F: 70,
- /** Key constant @type Number */
- G: 71,
- /** Key constant @type Number */
- H: 72,
- /** Key constant @type Number */
- I: 73,
- /** Key constant @type Number */
- J: 74,
- /** Key constant @type Number */
- K: 75,
- /** Key constant @type Number */
- L: 76,
- /** Key constant @type Number */
- M: 77,
- /** Key constant @type Number */
- N: 78,
- /** Key constant @type Number */
- O: 79,
- /** Key constant @type Number */
- P: 80,
- /** Key constant @type Number */
- Q: 81,
- /** Key constant @type Number */
- R: 82,
- /** Key constant @type Number */
- S: 83,
- /** Key constant @type Number */
- T: 84,
- /** Key constant @type Number */
- U: 85,
- /** Key constant @type Number */
- V: 86,
- /** Key constant @type Number */
- W: 87,
- /** Key constant @type Number */
- X: 88,
- /** Key constant @type Number */
- Y: 89,
- /** Key constant @type Number */
- Z: 90,
- /** Key constant @type Number */
- CONTEXT_MENU: 93,
- /** Key constant @type Number */
- NUM_ZERO: 96,
- /** Key constant @type Number */
- NUM_ONE: 97,
- /** Key constant @type Number */
- NUM_TWO: 98,
- /** Key constant @type Number */
- NUM_THREE: 99,
- /** Key constant @type Number */
- NUM_FOUR: 100,
- /** Key constant @type Number */
- NUM_FIVE: 101,
- /** Key constant @type Number */
- NUM_SIX: 102,
- /** Key constant @type Number */
- NUM_SEVEN: 103,
- /** Key constant @type Number */
- NUM_EIGHT: 104,
- /** Key constant @type Number */
- NUM_NINE: 105,
- /** Key constant @type Number */
- NUM_MULTIPLY: 106,
- /** Key constant @type Number */
- NUM_PLUS: 107,
- /** Key constant @type Number */
- NUM_MINUS: 109,
- /** Key constant @type Number */
- NUM_PERIOD: 110,
- /** Key constant @type Number */
- NUM_DIVISION: 111,
- /** Key constant @type Number */
- F1: 112,
- /** Key constant @type Number */
- F2: 113,
- /** Key constant @type Number */
- F3: 114,
- /** Key constant @type Number */
- F4: 115,
- /** Key constant @type Number */
- F5: 116,
- /** Key constant @type Number */
- F6: 117,
- /** Key constant @type Number */
- F7: 118,
- /** Key constant @type Number */
- F8: 119,
- /** Key constant @type Number */
- F9: 120,
- /** Key constant @type Number */
- F10: 121,
- /** Key constant @type Number */
- F11: 122,
- /** Key constant @type Number */
- F12: 123,
- /** @private */
- isNavKeyPress : function(){
- var me = this,
- k = this.normalizeKey(me.keyCode);
- return (k >= 33 && k <= 40) || // Page Up/Down, End, Home, Left, Up, Right, Down
- k == me.RETURN ||
- k == me.TAB ||
- k == me.ESC;
- },
- isSpecialKey : function(){
- var k = this.normalizeKey(this.keyCode);
- return (this.type == 'keypress' && this.ctrlKey) ||
- this.isNavKeyPress() ||
- (k == this.BACKSPACE) || // Backspace
- (k >= 16 && k <= 20) || // Shift, Ctrl, Alt, Pause, Caps Lock
- (k >= 44 && k <= 45); // Print Screen, Insert
- },
- getPoint : function(){
- return new Ext.lib.Point(this.xy[0], this.xy[1]);
- },
- /**
- * Returns true if the control, meta, shift or alt key was pressed during this event.
- * @return {Boolean}
- */
- hasModifier : function(){
- return ((this.ctrlKey || this.altKey) || this.shiftKey);
- }
- });