treeview.js

原名JSPackager

 * label will toggle the expanded/collapsed state of the node.  By
 * changing the href property of the instance, this behavior can be
 * changed so that the label will go to the specified href.
 *
 * @extends YAHOO.widget.Node
 * @constructor
 * @param oData {object} a string or object containing the data that will
 * be used to render this node
 * @param oParent {YAHOO.widget.Node} this node's parent node
 * @param expanded {boolean} the initial expanded/collapsed state
 */
YAHOO.widget.TextNode = function(oData, oParent, expanded) {
    // this.type = "TextNode";

    if (oData) { 
        this.init(oData, oParent, expanded);
        this.setUpLabel(oData);
    }

    /**
     * @private
     */
};

YAHOO.widget.TextNode.prototype = new YAHOO.widget.Node();

/**
 * The CSS class for the label href.  Defaults to ygtvlabel, but can be
 * overridden to provide a custom presentation for a specific node.
 *
 * @type string
 */
YAHOO.widget.TextNode.prototype.labelStyle = "ygtvlabel";

/**
 * The derived element id of the label for this node
 *
 * @type string
 */
YAHOO.widget.TextNode.prototype.labelElId = null;

/**
 * The text for the label.  It is assumed that the oData parameter will
 * either be a string that will be used as the label, or an object that
 * has a property called "label" that we will use.
 *
 * @type string
 */
YAHOO.widget.TextNode.prototype.label = null;

/**
 * Sets up the node label
 * 
 * @param oData string containing the label, or an object with a label property
 */
YAHOO.widget.TextNode.prototype.setUpLabel = function(oData) { 
    if (typeof oData == "string") {
        oData = { label: oData };
    }
    this.label = oData.label;
    
    // update the link
    if (oData.href) {
        this.href = oData.href;
    }

    // set the target
    if (oData.target) {
        this.target = oData.target;
    }

    if (oData.style) {
        this.labelStyle = oData.style;
    }

    this.labelElId = "ygtvlabelel" + this.index;
};

/**
 * Returns the label element
 *
 * @return {object} the element
 */
YAHOO.widget.TextNode.prototype.getLabelEl = function() { 
    return document.getElementById(this.labelElId);
};

// overrides YAHOO.widget.Node
YAHOO.widget.TextNode.prototype.getNodeHtml = function() { 
    var sb = [];

    sb[sb.length] = '<table border="0" cellpadding="0" cellspacing="0">';
    sb[sb.length] = '<tr>';
    
    for (i=0;i<this.depth;++i) {
        // sb[sb.length] = '<td class="ygtvdepthcell">&#160;</td>';
        sb[sb.length] = '<td class="' + this.getDepthStyle(i) + '">&#160;</td>';
    }

    var getNode = 'YAHOO.widget.TreeView.getNode(\'' +
                    this.tree.id + '\',' + this.index + ')';

    sb[sb.length] = '<td';
    // sb[sb.length] = ' onselectstart="return false"';
    sb[sb.length] = ' id="' + this.getToggleElId() + '"';
    sb[sb.length] = ' class="' + this.getStyle() + '"';
    if (this.hasChildren(true)) {
        sb[sb.length] = ' onmouseover="this.className=';
        sb[sb.length] = getNode + '.getHoverStyle()"';
        sb[sb.length] = ' onmouseout="this.className=';
        sb[sb.length] = getNode + '.getStyle()"';
    }
    sb[sb.length] = ' onclick="javascript:' + this.getToggleLink() + '">';

    /*
    sb[sb.length] = '<img id="' + this.getSpacerId() + '"';
    sb[sb.length] = ' alt=""';
    sb[sb.length] = ' tabindex=0';
    sb[sb.length] = ' src="' + this.spacerPath + '"';
    sb[sb.length] = ' title="' + this.getStateText() + '"';
    sb[sb.length] = ' class="ygtvspacer"';
    // sb[sb.length] = ' onkeypress="return ' + getNode + '".onKeyPress()"';
    sb[sb.length] = ' />';
    */

    sb[sb.length] = '&#160;';

    sb[sb.length] = '</td>';
    sb[sb.length] = '<td>';
    sb[sb.length] = '<a';
    sb[sb.length] = ' id="' + this.labelElId + '"';
    sb[sb.length] = ' class="' + this.labelStyle + '"';
    sb[sb.length] = ' href="' + this.href + '"';
    sb[sb.length] = ' target="' + this.target + '"';
    sb[sb.length] = ' onclick="return ' + getNode + '.onLabelClick(' + getNode +')"';
    if (this.hasChildren(true)) {
        sb[sb.length] = ' onmouseover="document.getElementById(\'';
        sb[sb.length] = this.getToggleElId() + '\').className=';
        sb[sb.length] = getNode + '.getHoverStyle()"';
        sb[sb.length] = ' onmouseout="document.getElementById(\'';
        sb[sb.length] = this.getToggleElId() + '\').className=';
        sb[sb.length] = getNode + '.getStyle()"';
    }
    sb[sb.length] = ' >';
    sb[sb.length] = this.label;
    sb[sb.length] = '</a>';
    sb[sb.length] = '</td>';
    sb[sb.length] = '</tr>';
    sb[sb.length] = '</table>';

    return sb.join("");
};

/**
 * Executed when the label is clicked
 * @param me {Node} this node
 * @scope the anchor tag clicked
 * @return false to cancel the anchor click
 */
YAHOO.widget.TextNode.prototype.onLabelClick = function(me) { 
    //return true;
};

YAHOO.widget.TextNode.prototype.toString = function() { 
    return "TextNode (" + this.index + ") " + this.label;
};

/**
 * A menu-specific implementation that differs from TextNode in that only 
 * one sibling can be expanded at a time.
 * @extends YAHOO.widget.TextNode
 * @constructor
 */
YAHOO.widget.MenuNode = function(oData, oParent, expanded) {
	if (oData) { 
		this.init(oData, oParent, expanded);
		this.setUpLabel(oData);
	}

    /**
     * Menus usually allow only one branch to be open at a time.
     * @type boolean
     */
	this.multiExpand = false;

    /**
     * @private
     */

};

YAHOO.widget.MenuNode.prototype = new YAHOO.widget.TextNode();

YAHOO.widget.MenuNode.prototype.toString = function() { 
    return "MenuNode (" + this.index + ") " + this.label;
};

/**
 * This implementation takes either a string or object for the
 * oData argument.  If is it a string, we will use it for the display
 * of this node (and it can contain any html code).  If the parameter
 * is an object, we look for a parameter called "html" that will be
 * used for this node's display.
 *
 * @extends YAHOO.widget.Node
 * @constructor
 * @param oData {object} a string or object containing the data that will
 * be used to render this node
 * @param oParent {YAHOO.widget.Node} this node's parent node
 * @param expanded {boolean} the initial expanded/collapsed state
 * @param hasIcon {boolean} specifies whether or not leaf nodes should
 * have an icon
 */
YAHOO.widget.HTMLNode = function(oData, oParent, expanded, hasIcon) {
    if (oData) { 
        this.init(oData, oParent, expanded);
        this.initContent(oData, hasIcon);
    }
};

YAHOO.widget.HTMLNode.prototype = new YAHOO.widget.Node();

/**
 * The CSS class for the html content container.  Defaults to ygtvhtml, but 
 * can be overridden to provide a custom presentation for a specific node.
 *
 * @type string
 */
YAHOO.widget.HTMLNode.prototype.contentStyle = "ygtvhtml";

/**
 * The generated id that will contain the data passed in by the implementer.
 *
 * @type string
 */
YAHOO.widget.HTMLNode.prototype.contentElId = null;

/**
 * The HTML content to use for this node's display
 *
 * @type string
 */
YAHOO.widget.HTMLNode.prototype.content = null;

/**
 * Sets up the node label
 *
 * @param {object} An html string or object containing an html property
 * @param {boolean} hasIcon determines if the node will be rendered with an
 * icon or not
 */
YAHOO.widget.HTMLNode.prototype.initContent = function(oData, hasIcon) { 
    if (typeof oData == "string") {
        oData = { html: oData };
    }

    this.html = oData.html;
    this.contentElId = "ygtvcontentel" + this.index;
    this.hasIcon = hasIcon;

    /**
     * @private
     */
};

/**
 * Returns the outer html element for this node's content
 *
 * @return {HTMLElement} the element
 */
YAHOO.widget.HTMLNode.prototype.getContentEl = function() { 
    return document.getElementById(this.contentElId);
};

// overrides YAHOO.widget.Node
YAHOO.widget.HTMLNode.prototype.getNodeHtml = function() { 
    var sb = [];

    sb[sb.length] = '<table border="0" cellpadding="0" cellspacing="0">';
    sb[sb.length] = '<tr>';
    
    for (i=0;i<this.depth;++i) {
        sb[sb.length] = '<td class="' + this.getDepthStyle(i) + '">&#160;</td>';
    }

    if (this.hasIcon) {
        sb[sb.length] = '<td';
        sb[sb.length] = ' id="' + this.getToggleElId() + '"';
        sb[sb.length] = ' class="' + this.getStyle() + '"';
        sb[sb.length] = ' onclick="javascript:' + this.getToggleLink() + '"';
        if (this.hasChildren(true)) {
            sb[sb.length] = ' onmouseover="this.className=';
            sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\'';
            sb[sb.length] = this.tree.id + '\',' + this.index +  ').getHoverStyle()"';
            sb[sb.length] = ' onmouseout="this.className=';
            sb[sb.length] = 'YAHOO.widget.TreeView.getNode(\'';
            sb[sb.length] = this.tree.id + '\',' + this.index +  ').getStyle()"';
        }
        sb[sb.length] = '>&#160;</td>';
    }

    sb[sb.length] = '<td';
    sb[sb.length] = ' id="' + this.contentElId + '"';
    sb[sb.length] = ' class="' + this.contentStyle + '"';
    sb[sb.length] = ' >';
    sb[sb.length] = this.html;
    sb[sb.length] = '</td>';
    sb[sb.length] = '</tr>';
    sb[sb.length] = '</table>';

    return sb.join("");
};

YAHOO.widget.HTMLNode.prototype.toString = function() { 
    return "HTMLNode (" + this.index + ")";
};

/**
 * A static factory class for tree view expand/collapse animations
 *
 * @constructor
 */
YAHOO.widget.TVAnim = function() {
    return {
        /**
         * Constant for the fade in animation
         * 
         * @type string
         */
        FADE_IN: "TVFadeIn",

        /**
         * Constant for the fade out animation
         * 
         * @type string
         */
        FADE_OUT: "TVFadeOut",

        /**
         * Returns a ygAnim instance of the given type
         *
         * @param type {string} the type of animation
         * @param el {HTMLElement} the element to element (probably the children div)
         * @param callback {function} function to invoke when the animation is done.
         * @return {YAHOO.util.Animation} the animation instance
         */
        getAnim: function(type, el, callback) {
            if (YAHOO.widget[type]) {
                return new YAHOO.widget[type](el, callback);
            } else {
                return null;
            }
        },

        /**
         * Returns true if the specified animation class is available
         *
         * @param type {string} the type of animation
         * @return {boolean} true if valid, false if not
         */
        isValid: function(type) {
            return (YAHOO.widget[type]);
        }
    };
} ();

/**
 * A 1/2 second fade-in animation.
 *
 * @constructor
 * @param el {HTMLElement} the element to animate
 * @param callback {function} function to invoke when the animation is finished
 */
YAHOO.widget.TVFadeIn = function(el, callback) {
    /**
     * The element to animate
     * @type HTMLElement
     */
    this.el = el;

    /**
     * the callback to invoke when the animation is complete
     *
     * @type function
     */
    this.callback = callback;

    /**
     * @private
     */
};

/**
 * Performs the animation
 */
YAHOO.widget.TVFadeIn.prototype = {
    animate: function() {
        var tvanim = this;

        var s = this.el.style;
        s.opacity = 0.1;
        s.filter = "alpha(opacity=10)";
        s.display = "";

        // var dur = ( navigator.userAgent.match(/msie/gi) ) ? 0.05 : 0.4;
        var dur = 0.4; 
        // var a = new ygAnim_Fade(this.el, dur, 1);
        // a.setStart(0.1);
        // a.onComplete = function() { tvanim.onComplete(); };

        // var a = new YAHOO.util.Anim(this.el, 'opacity', 0.1, 1);
        var a = new YAHOO.util.Anim(this.el, {opacity: {from: 0.1, to: 1, unit:""}}, dur);
        a.onComplete.subscribe( function() { tvanim.onComplete(); } );
        a.animate();
    },

    /**
     * Clean up and invoke callback
     */
    onComplete: function() {
        this.callback();
    },

    toString: function() {
        return "TVFadeIn";
    }
};

/**
 * A 1/2 second fade out animation.
 *
 * @constructor
 * @param el {HTMLElement} the element to animate
 * @param callback {Function} function to invoke when the animation is finished
 */
YAHOO.widget.TVFadeOut = function(el, callback) {
    /**
     * The element to animate
     * @type HTMLElement
     */
    this.el = el;

    /**
     * the callback to invoke when the animation is complete
     *
     * @type function
     */
    this.callback = callback;

    /**
     * @private
     */
};

/**
 * Performs the animation
 */
YAHOO.widget.TVFadeOut.prototype = {
    animate: function() {
        var tvanim = this;
        // var dur = ( navigator.userAgent.match(/msie/gi) ) ? 0.05 : 0.4;
        var dur = 0.4;
        // var a = new ygAnim_Fade(this.el, dur, 0.1);
        // a.onComplete = function() { tvanim.onComplete(); };

        // var a = new YAHOO.util.Anim(this.el, 'opacity', 1, 0.1);
        var a = new YAHOO.util.Anim(this.el, {opacity: {from: 1, to: 0.1, unit:""}}, dur);
        a.onComplete.subscribe( function() { tvanim.onComplete(); } );
        a.animate();
    },

    /**
     * Clean up and invoke callback
     */
    onComplete: function() {
        var s = this.el.style;
        s.display = "none";
        // s.opacity = 1;
        s.filter = "alpha(opacity=100)";
        this.callback();
    },

    toString: function() {
        return "TVFadeOut";
    }
};