button-debug.js

很棒的在线教学系统

                    this.addStateCSSClasses("active");
        
                    this._activationButtonPressed = true;
                
                }
        
        
        
                if (sType == "split" || sType == "menu") {

                    this._hideMenuTimer = Lang.later(250, this, this.on, ["mouseup", onMouseUp]);
        
                }
        
            }
            
            return bReturnVal;
            
        },
        
        
        /**
        * @method _onMouseUp
        * @description "mouseup" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onMouseUp: function (p_oEvent) {
        
            var sType = this.get("type"),
            	oHideMenuTimer = this._hideMenuTimer,
            	bReturnVal = true;
        
        
            if (oHideMenuTimer) {
  
  				oHideMenuTimer.cancel();
        
            }
        
        
            if (sType == "checkbox" || sType == "radio") {
        
                this.set("checked", !(this.get("checked")));
            
            }
        
        
            this._activationButtonPressed = false;
            
        
            if (sType != "menu") {
        
                this.removeStateCSSClasses("active");
            
            }

                
			if (sType == "split" && Event.getPageX(p_oEvent) > this._nOptionRegionX) {
				
				bReturnVal = false;

			}

			return bReturnVal;
            
        },
        
        
        /**
        * @method _onFocus
        * @description "focus" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onFocus: function (p_oEvent) {
        
            var oElement;
        
            this.addStateCSSClasses("focus");
        
            if (this._activationKeyPressed) {
        
                this.addStateCSSClasses("active");
           
            }
        
            m_oFocusedButton = this;
        
        
            if (!this._hasKeyEventHandlers) {
        
                oElement = this._button;
        
                Event.on(oElement, "blur", this._onBlur, null, this);
                Event.on(oElement, "keydown", this._onKeyDown, null, this);
                Event.on(oElement, "keyup", this._onKeyUp, null, this);
        
                this._hasKeyEventHandlers = true;
        
            }
        
        
            this.fireEvent("focus", p_oEvent);
        
        },
        
        
        /**
        * @method _onBlur
        * @description "blur" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onBlur: function (p_oEvent) {
        
            this.removeStateCSSClasses("focus");
        
            if (this.get("type") != "menu") {
        
                this.removeStateCSSClasses("active");

            }    
        
            if (this._activationKeyPressed) {
        
                Event.on(document, "keyup", this._onDocumentKeyUp, null, this);
        
            }
        
        
            m_oFocusedButton = null;
        
            this.fireEvent("blur", p_oEvent);
           
        },
        
        
        /**
        * @method _onDocumentKeyUp
        * @description "keyup" event handler for the document.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onDocumentKeyUp: function (p_oEvent) {
        
            if (this._isActivationKey(Event.getCharCode(p_oEvent))) {
        
                this._activationKeyPressed = false;
                
                Event.removeListener(document, "keyup", this._onDocumentKeyUp);
            
            }
        
        },
        
        
        /**
        * @method _onKeyDown
        * @description "keydown" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onKeyDown: function (p_oEvent) {
        
            var oMenu = this._menu;
        
        
            if (this.get("type") == "split" && 
                this._isSplitButtonOptionKey(p_oEvent)) {
        
                this.fireEvent("option", p_oEvent);
        
            }
            else if (this._isActivationKey(Event.getCharCode(p_oEvent))) {
        
                if (this.get("type") == "menu") {
        
                    this._showMenu(p_oEvent);
        
                }
                else {
        
                    this._activationKeyPressed = true;
                    
                    this.addStateCSSClasses("active");
                
                }
            
            }
        
        
            if (oMenu && oMenu.cfg.getProperty("visible") && 
                Event.getCharCode(p_oEvent) == 27) {
            
                oMenu.hide();
                this.focus();
            
            }
        
        },
        
        
        /**
        * @method _onKeyUp
        * @description "keyup" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onKeyUp: function (p_oEvent) {
        
            var sType;
        
            if (this._isActivationKey(Event.getCharCode(p_oEvent))) {
        
                sType = this.get("type");
        
                if (sType == "checkbox" || sType == "radio") {
        
                    this.set("checked", !(this.get("checked")));
                
                }
        
                this._activationKeyPressed = false;
        
                if (this.get("type") != "menu") {
        
                    this.removeStateCSSClasses("active");
        
                }
        
            }
        
        },
        
        
        /**
        * @method _onClick
        * @description "click" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onClick: function (p_oEvent) {
        
            var sType = this.get("type"),
                sTitle,
                oForm,
                oSrcElement,
                bReturnVal;
        

            switch (sType) {
        
            case "radio":
            case "checkbox":

				if (!this._hasDefaultTitle) {
    
					if (this.get("checked")) {
						
						sTitle = (sType == "radio") ? 
									this.RADIO_CHECKED_TITLE : 
									this.CHECKBOX_CHECKED_TITLE;
					
					}
					else {
					
						sTitle = (sType == "radio") ? 
									this.RADIO_DEFAULT_TITLE : 
									this.CHECKBOX_DEFAULT_TITLE;
					
					}
					
					this.set("title", sTitle);
                
                }
    
                break;
    
            case "submit":

				if (p_oEvent.returnValue !== false) {
    
                	this.submitForm();
                
                }
            
                break;
    
            case "reset":
    
                oForm = this.getForm();
    
                if (oForm) {
    
                    oForm.reset();
                
                }
    
                break;
    
            case "menu":
    
                sTitle = this._menu.cfg.getProperty("visible") ? 
                                this.MENUBUTTON_MENU_VISIBLE_TITLE : 
                                this.MENUBUTTON_DEFAULT_TITLE;
    
                this.set("title", sTitle);
    
                break;
    
            case "split":
    
                if (Event.getPageX(p_oEvent) > this._nOptionRegionX) {
    
                    bReturnVal = false;
                
                }
                else {
    
                    this._hideMenu();
        
                    oSrcElement = this.get("srcelement");
        
                    if (oSrcElement && oSrcElement.type == "submit") {
    
                        this.submitForm();
                    
                    }
                
                }
    
                sTitle = this._menu.cfg.getProperty("visible") ? 
                                this.SPLITBUTTON_OPTION_VISIBLE_TITLE : 
                                this.SPLITBUTTON_DEFAULT_TITLE;
    
                this.set("title", sTitle);
    
                break;
        
            }
        
        	return bReturnVal;
        
        },
        
        
        /**
        * @method _onDblClick
        * @description "dblclick" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onDblClick: function (p_oEvent) {
        
            var bReturnVal = true;
    
			if (this.get("type") == "split" && Event.getPageX(p_oEvent) > this._nOptionRegionX) {

				bReturnVal = false;
			
			}
        
        	return bReturnVal;
        
        },        
        
        
        /**
        * @method _onAppendTo
        * @description "appendTo" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onAppendTo: function (p_oEvent) {
        
            /*
                It is necessary to call "_addListenersToForm" using 
                "setTimeout" to make sure that the button's "form" property 
                returns a node reference.  Sometimes, if you try to get the 
                reference immediately after appending the field, it is null.
            */
        
            Lang.later(0, this, this._addListenersToForm);
        
        },
        
        
        /**
        * @method _onFormReset
        * @description "reset" event handler for the button's form.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event 
        * object passed back by the event utility (YAHOO.util.Event).
        */
        _onFormReset: function (p_oEvent) {
        
            var sType = this.get("type"),
                oMenu = this._menu;
        
            if (sType == "checkbox" || sType == "radio") {
        
                this.resetValue("checked");
        
            }
        
        
            if (Menu && oMenu && (oMenu instanceof Menu)) {
        
                this.resetValue("selectedMenuItem");
        
            }
        
        },


        /**
        * @method _onFormSubmit
        * @description "submit" event handler for the button's form.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event 
        * object passed back by the event utility (YAHOO.util.Event).
        */        
        _onFormSubmit: function (p_oEvent) {
        
        	this.createHiddenFields();
        
        },
        
        
        /**
        * @method _onDocumentMouseDown
        * @description "mousedown" event handler for the document.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onDocumentMouseDown: function (p_oEvent) {

            var oTarget = Event.getTarget(p_oEvent),
                oButtonElement = this.get("element"),
                oMenuElement = this._menu.element;
           
        
            if (oTarget != oButtonElement && 
                !Dom.isAncestor(oButtonElement, oTarget) && 
                oTarget != oMenuElement && 
                !Dom.isAncestor(oMenuElement, oTarget)) {
        
                this._hideMenu();
        
                Event.removeListener(document, "mousedown", 
                    this._onDocumentMouseDown);    
            
            }
        
        },
        
        
        /**
        * @method _onOption
        * @description "option" event handler for the button.
        * @protected
        * @param {Event} p_oEvent Object representing the DOM event object  
        * passed back by the event utility (YAHOO.util.Event).
        */
        _onOption: function (p_oEvent) {
        
            if (t