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| /*
* Treeview 1.3 - jQuery plugin to hide and show branches of a tree
*
* http://bassistance.de/jquery-plugins/jquery-plugin-treeview/
*
* Copyright (c) 2006 Jörn Zaefferer, Myles Angell
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* Revision: jQueryId: jquery.treeview.js 3506 2007-10-02 18:15:21Z joern.zaefferer jQuery
*
*/
(function(jQuery) {
// classes used by the plugin
// need to be styled via external stylesheet, see first example
var CLASSES = {
open: "open",
closed: "closed",
expandable: "expandable",
collapsable: "collapsable",
lastCollapsable: "lastCollapsable",
lastExpandable: "lastExpandable",
last: "last",
hitarea: "hitarea"
};
jQuery.extend(jQuery.fn, {
swapClass: function(c1, c2) {
return this.each(function() {
var jQuerythis = jQuery(this);
if ( jQuery.className.has(this, c1) )
jQuerythis.removeClass(c1).addClass(c2);
else if ( jQuery.className.has(this, c2) )
jQuerythis.removeClass(c2).addClass(c1);
});
},
replaceClass: function(c1, c2) {
return this.each(function() {
var jQuerythis = jQuery(this);
if ( jQuery.className.has(this, c1) )
jQuerythis.removeClass(c1).addClass(c2);
});
},
hoverClass: function(className) {
className = className || "hover";
return this.hover(function() {
jQuery(this).addClass(className);
}, function() {
jQuery(this).removeClass(className);
});
},
heightToggle: function(animated, callback) {
animated ?
this.animate({ height: "toggle" }, animated, callback) :
this.each(function(){
jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
if(callback)
callback.apply(this, arguments);
});
},
heightHide: function(animated, callback) {
if (animated) {
this.animate({ height: "hide" }, animated, callback)
} else {
this.hide();
if (callback)
this.each(callback);
}
},
prepareBranches: function(settings) {
// mark last tree items
this.filter(":last-child").addClass(CLASSES.last);
// collapse whole tree, or only those marked as closed, anyway except those marked as open
this.filter((settings.collapsed ? "" : "." + CLASSES.closed) + ":not(." + CLASSES.open + ")").find(">ul").hide();
// return all items with sublists
return this.filter(":has(>ul)");
},
applyClasses: function(settings, toggler) {
this.filter(":has(>ul):not(:has(>a))").find(">span").click(function(event) {
if ( this == event.target ) {
toggler.apply(jQuery(this).next());
}
}).add( jQuery("a", this) ).hoverClass();
// handle closed ones first
this.filter(":has(>ul:hidden)")
.addClass(CLASSES.expandable)
.replaceClass(CLASSES.last, CLASSES.lastExpandable);
// handle open ones
this.not(":has(>ul:hidden)")
.addClass(CLASSES.collapsable)
.replaceClass(CLASSES.last, CLASSES.lastCollapsable);
// create hitarea
this.prepend("<div class=\"" + CLASSES.hitarea + "\"/>")
.find("div." + CLASSES.hitarea).click( toggler )
},
treeview: function(settings) {
// currently no defaults necessary, all implicit
settings = jQuery.extend({}, settings);
if (settings.add) {
return this.trigger("add", [settings.add]);
}
if (settings.toggle ) {
var callback = settings.toggle;
settings.toggle = function() {
return callback.apply(jQuery(this).parent()[0], arguments);
}
}
// factory for treecontroller
function treeController(tree, control) {
// factory for click handlers
function handler(filter) {
return function() {
// reuse toggle event handler, applying the elements to toggle
// start searching for all hitareas
toggler.apply( jQuery("div." + CLASSES.hitarea, tree).filter(function() {
// for plain toggle, no filter is provided, otherwise we need to check the parent element
return filter ? jQuery(this).parent("." + filter).length : true;
}) );
return false;
}
}
// click on first element to collapse tree
jQuery(":eq(0)", control).click( handler(CLASSES.collapsable) );
// click on second to expand tree
jQuery(":eq(1)", control).click( handler(CLASSES.expandable) );
// click on third to toggle tree
jQuery(":eq(2)", control).click( handler() );
}
// handle toggle event
function toggler() {
// this refers to hitareas, we need to find the parent lis first
jQuery(this).parent()
// swap classes
.swapClass( CLASSES.collapsable, CLASSES.expandable )
.swapClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
// find child lists
.find( ">ul" )
// toggle them
.heightToggle( settings.animated, settings.toggle );
if ( settings.unique ) {
jQuery(this).parent()
.siblings()
.replaceClass( CLASSES.collapsable, CLASSES.expandable )
.replaceClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
.find( ">ul" )
.heightHide( settings.animated, settings.toggle );
}
}
function serialize() {
function binary(arg) {
return arg ? 1 : 0;
}
var data = [];
branches.each(function(i, e) {
data[i] = jQuery(e).is(":has(>ul:visible)") ? 1 : 0;
});
jQuery.cookie("treeview", data.join("") );
}
function deserialize() {
var stored = jQuery.cookie("treeview");
if ( stored ) {
var data = stored.split("");
branches.each(function(i, e) {
jQuery(e).find(">ul")[ parseInt(data[i]) ? "show" : "hide" ]();
});
}
}
// add treeview class to activate styles
this.addClass("treeview");
// prepare branches and find all tree items with child lists
var branches = this.find("li").prepareBranches(settings);
switch(settings.persist) {
case "cookie":
var toggleCallback = settings.toggle;
settings.toggle = function() {
serialize();
if (toggleCallback) {
toggleCallback.apply(this, arguments);
}
};
deserialize();
break;
case "location":
var current = this.find("a").filter(function() { return this.href == location.href; });
if ( current.length ) {
current.addClass("selected").parents("ul, li").add( current.next() ).show();
}
break;
}
branches.applyClasses(settings, toggler);
// if control option is set, create the treecontroller
if ( settings.control )
treeController(this, settings.control);
return this.bind("add", function(event, branches) {
jQuery(branches).prev().removeClass(CLASSES.last).removeClass(CLASSES.lastCollapsable).removeClass(CLASSES.lastExpandable);
jQuery(branches).find("li").andSelf().prepareBranches(settings).applyClasses(settings, toggler);
});
}
});
// provide backwards compability
jQuery.fn.Treeview = jQuery.fn.treeview;
})(jQuery); |
