menu.js

原名JSPackager

    
            oConfig.queueProperty("iframe", false);
            oConfig.queueProperty("visible", true);
            
        }
    
    
        if(nListElements > 0) {
    
            var i = 0;
            var bFirstList = true;
            var oUL;
            var oGroupTitle;
    
    
            do {
    
                oUL = this._aListElements[i];
    
                if(oUL) {
    
                    if(bFirstList) {
            
                        Dom.addClass(oUL, "first-of-type");
                        bFirstList = false;
            
                    }
    
    
                    if(!Dom.isAncestor(oEl, oUL)) {
    
                        this.appendToBody(oUL);
    
                    }
    
    
                    oGroupTitle = this._aGroupTitleElements[i];
    
                    if(oGroupTitle) {
    
                        if(!Dom.isAncestor(oEl, oGroupTitle)) {
    
                            oUL.parentNode.insertBefore(oGroupTitle, oUL);
    
                        }
    
    
                        Dom.addClass(oUL, "hastitle");
    
                    }
    
                }
    
                i++;
    
            }
            while(i < nListElements);
    
        }

    };

/**
* "render" Custom Event handler for a MenuModule instance.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oMenuModule The MenuModule instance that 
* fired the event.
*/
YAHOO.widget.MenuModule.prototype._onRender = 

    function(p_sType, p_aArgs, p_oMenuModule) {

        if(this.cfg.getProperty("position") == "dynamic") {
    
            var sWidth = this.element.parentNode.tagName == "BODY" ? 
                    this.element.offsetWidth : this._getOffsetWidth();
        
            this.cfg.setProperty("width", (sWidth + "px"));
    
        }

    };

/**
* "show" Custom Event handler for a MenuModule instance.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oMenuModule The MenuModule instance that 
* fired the event.
*/
YAHOO.widget.MenuModule.prototype._onShow = 

    function(p_sType, p_aArgs, p_oMenuModule) {
    
        /*
            Setting focus to an item in the newly visible submenu alerts the 
            contents of the submenu to the screen reader.
        */

        this.setInitialFocus();
    
    };

/**
* "hide" Custom Event handler for a MenuModule instance.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oMenuModule The MenuModule instance that 
* fired the event.
*/
YAHOO.widget.MenuModule.prototype._onBeforeHide = 

    function(p_sType, p_aArgs, p_oMenuModule) {

        var oActiveItem = this.activeItem;

        if(oActiveItem) {
    
            oActiveItem.blur();

            if(oActiveItem.cfg.getProperty("selected")) {
    
                oActiveItem.cfg.setProperty("selected", false);
    
            }
    
            var oSubmenu = oActiveItem.cfg.getProperty("submenu");
    
            if(oSubmenu && oSubmenu.cfg.getProperty("visible")) {
    
                oSubmenu.hide();
    
            }
    
        }

    };

/**
* "configchange" Custom Event handler for a submenu.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oSubmenu The submenu that subscribed
* to the event.
*/
YAHOO.widget.MenuModule.prototype._onParentMenuModuleConfigChange = 

    function(p_sType, p_aArgs, p_oSubmenu) {
    
        var sPropertyName = p_aArgs[0][0];
        var oPropertyValue = p_aArgs[0][1];
    
        switch(sPropertyName) {
    
            case "iframe":
            case "constraintoviewport":
    
                p_oSubmenu.cfg.setProperty(sPropertyName, oPropertyValue);
                    
            break;        
            
        }
    
    };

/**
* "render" Custom Event handler for a MenuModule instance.  Renders a  
* submenu in response to the firing of it's parent's "render" event.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oSubmenu The submenu that subscribed
* to the event.
*/
YAHOO.widget.MenuModule.prototype._onParentMenuModuleRender = 

    function(p_sType, p_aArgs, p_oSubmenu) {

        /*
            Set the "iframe" and "constraintoviewport" configuration 
            properties to match the parent MenuModule
        */ 
    
        var oParentMenu = p_oSubmenu.parent.parent;
    
        p_oSubmenu.cfg.applyConfig(
        
            {
                constraintoviewport: 
                    oParentMenu.cfg.getProperty("constraintoviewport"),
    
                xy: [0,0],
    
                iframe: oParentMenu.cfg.getProperty("iframe")
    
            }
        
        );
    
    
        if(this._oDom.inDocument(this.element)) {
    
            this.render();
    
        }
        else {
    
            this.render(this.parent.element);
    
        }
    
    };

/**
* "beforeshow" Custom Event handler for a submenu.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oSubmenu The submenu that fired
* the event.
*/
YAHOO.widget.MenuModule.prototype._onSubmenuBeforeShow = 

    function(p_sType, p_aArgs, p_oSubmenu) {
    
        var oParent = this.parent;
        var aAlignment = oParent.parent.cfg.getProperty("submenualignment");

        this.cfg.setProperty(
            "context", 
            [
                oParent.element, 
                aAlignment[0], 
                aAlignment[1]
            ]
        );

        oParent.submenuIndicator.alt = 
            oParent.EXPANDED_SUBMENU_INDICATOR_ALT_TEXT;
    
    };

/**
* "show" Custom Event handler for a submenu.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oSubmenu The submenu that fired
* the event.
*/
YAHOO.widget.MenuModule.prototype._onSubmenuShow = 

    function(p_sType, p_aArgs, p_oSubmenu) {
    
        var oParent = this.parent;

        oParent.submenuIndicator.alt = 
            oParent.EXPANDED_SUBMENU_INDICATOR_ALT_TEXT;
    
    };

/**
* "hide" Custom Event handler for a submenu.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {YAHOO.widget.MenuModule} p_oSubmenu The submenu that fired
* the event.
*/
YAHOO.widget.MenuModule.prototype._onSubmenuHide = 

    function(p_sType, p_aArgs, p_oSubmenu) {
    
        var oParent = this.parent;

        if(oParent.parent.cfg.getProperty("visible")) {

            oParent.cfg.setProperty("selected", false);
    
            oParent.focus();
        
        }

        oParent.submenuIndicator.alt = 
            oParent.COLLAPSED_SUBMENU_INDICATOR_ALT_TEXT;
    
    };

/**
* "focus" YAHOO.util.CustomEvent handler for a MenuModule instance's items.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {Array} p_aObjects Array containing the current MenuModule instance 
* and the item that fired the event.
*/
YAHOO.widget.MenuModule.prototype._onItemFocus = 

    function(p_sType, p_aArgs, p_aObjects) {
    
        var me = p_aObjects[0];
        var oItem = p_aObjects[1];
    
        me.activeItem = oItem;
    
    };

/**
* "blur" YAHOO.util.CustomEvent handler for a MenuModule instance's items.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the event 
* was fired.
* @param {Array} p_aObjects Array containing the current MenuModule instance 
* and the item that fired the event.
*/
YAHOO.widget.MenuModule.prototype._onItemBlur = 

    function(p_sType, p_aArgs, p_aObjects) {
    
        var me = p_aObjects[0];
        var oItem = p_aObjects[1];
        var oSubmenu = oItem.cfg.getProperty("submenu");
    
        if(!oSubmenu || (oSubmenu && !oSubmenu.cfg.getProperty("visible"))) {
    
            me.activeItem = null;
    
        }
    
    };

/**
* "configchange" YAHOO.util.CustomEvent handler for the MenuModule 
* instance's items.
* @private
* @param {String} p_sType The name of the event that was fired.
* @param {Array} p_aArgs Collection of arguments sent when the 
* event was fired.
* @param {Array} p_aObjects Array containing the current MenuModule instance 
* and the item that fired the event.
*/
YAHOO.widget.MenuModule.prototype._onItemConfigChange = 

    function(p_sType, p_aArgs, p_aObjects) {

        var me = p_aObjects[0];    
        var sProperty = p_aArgs[0][0];
        var oItem = p_aObjects[1];
    
        switch(sProperty) {
    
            case "submenu":
    
                var oSubmenu = p_aArgs[0][1];
    
                if(oSubmenu) {
    
                    me._configureItemSubmenuModule(oItem);
    
                }
    
            break;
    
            case "text":
            case "helptext":
    
                /*
                    A change to an item's "text" or "helptext"
                    configuration properties requires the width of the parent
                    MenuModule instance to be recalculated.
                */
    
                if(me.element.style.width) {
        
                    var sWidth = me._getOffsetWidth() + "px";
    
                    me._oDom.setStyle(me.element, "width", sWidth);
    
                }
    
            break;
    
        }
    
    };

/**
* The default event handler executed when the moveEvent is fired, if the 
* "constraintoviewport" configuration property is set to true.
*/
YAHOO.widget.MenuModule.prototype.enforceConstraints = 

    function(type, args, obj) {

        var Dom = this._oDom;
        var oConfig = this.cfg;
    
        var pos = args[0];
            
        var x = pos[0];
        var y = pos[1];
        
        var bod = document.getElementsByTagName('body')[0];
        var htm = document.getElementsByTagName('html')[0];
        
        var bodyOverflow = Dom.getStyle(bod, "overflow");
        var htmOverflow = Dom.getStyle(htm, "overflow");
        
        var offsetHeight = this.element.offsetHeight;
        var offsetWidth = this.element.offsetWidth;
        
        var viewPortWidth = Dom.getClientWidth();
        var viewPortHeight = Dom.getClientHeight();
        
        var scrollX = window.scrollX || document.body.scrollLeft;
        var scrollY = window.scrollY || document.body.scrollTop;
        
        var topConstraint = scrollY + 10;
        var leftConstraint = scrollX + 10;
        var bottomConstraint = scrollY + viewPortHeight - offsetHeight - 10;
        var rightConstraint = scrollX + viewPortWidth - offsetWidth - 10;
        
        var aContext = oConfig.getProperty("context");
        var oContextElement = aContext ? aContext[0] : null;
    
    
        if (x < 10) {
    
            x = leftConstraint;
    
        } else if ((x + offsetWidth) > viewPortWidth) {
    
            if(
                oContextElement && 
                ((x - oContextElement.offsetWidth) > offsetWidth)
            ) {
    
                x = (x - (oContextElement.offsetWidth + offsetWidth));
    
            }
            else {
    
                x = rightConstraint;
    
            }
    
        }
    
        if (y < 10) {
    
            y = topConstraint;
    
        } else if (y > bottomConstraint) {
    
            if(oContextElement && (y > offsetHeight)) {
    
                y = ((y + oContextElement.offsetHeight) - offsetHeight);
    
            }
            else {
    
                y = bottomConstraint;
    
            }
    
        }
    
        oConfig.setProperty("x", x, true);
        oConfig.setProperty("y", y, true);