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/*
* Treeview 1.5pre - jQuery plugin to hide and show branches of a tree
*
* https://bassistance.de/jquery-plugins/jquery-plugin-treeview/
* https://docs.jquery.com/Plugins/Treeview
*
* Copyright (c) 2007 Jörn Zaefferer
*
* Dual licensed under the MIT and GPL licenses:
* https://www.opensource.org/licenses/mit-license.php
* https://www.gnu.org/licenses/gpl.html
*
* Revision: $Id: jquery.treeview.js 5759 2008-07-01 07:50:28Z joern.zaefferer $
*
*/
;(function($) {
// TODO rewrite as a widget, removing all the extra plugins
$.extend($.fn, {
swapClass: function(c1, c2) {
var c1Elements = this.filter('.' + c1);
this.filter('.' + c2).removeClass(c2).addClass(c1);
c1Elements.removeClass(c1).addClass(c2);
return this;
},
replaceClass: function(c1, c2) {
return this.filter('.' + c1).removeClass(c1).addClass(c2).end();
},
hoverClass: function(className) {
className = className || "hover";
return this.hover(function() {
$(this).addClass(className);
}, function() {
$(this).removeClass(className);
});
},
heightToggle: function(animated, callback) {
animated ?
this.animate({ height: "toggle" }, animated, callback) :
this.each(function(){
jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
if(callback)
callback.apply(this, arguments);
});
},
heightHide: function(animated, callback) {
if (animated) {
this.animate({ height: "hide" }, animated, callback);
} else {
this.hide();
if (callback)
this.each(callback);
}
},
prepareBranches: function(settings) {
if (!settings.prerendered) {
// mark last tree items
this.filter(":last-child:not(ul)").addClass(CLASSES.last);
// collapse whole tree, or only those marked as closed, anyway except those marked as open
this.filter((settings.collapsed ? "" : "." + CLASSES.closed) + ":not(." + CLASSES.open + ")").find(">ul").hide();
}
// return all items with sublists
return this.filter(":has(>ul)");
},
applyClasses: function(settings, toggler) {
// TODO use event delegation
this.filter(":has(>ul):not(:has(>a))").find(">span").unbind("click.treeview").bind("click.treeview", function(event) {
// don't handle click events on children, eg. checkboxes
if ( this == event.target )
toggler.apply($(this).next());
}).add( $("a", this) ).hoverClass();
if (!settings.prerendered) {
// 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 if not present
var hitarea = this.find("div." + CLASSES.hitarea);
if (!hitarea.length)
hitarea = this.prepend("<div class=\"" + CLASSES.hitarea + "\"/>").find("div." + CLASSES.hitarea);
hitarea.removeClass().addClass(CLASSES.hitarea).each(function() {
var classes = "";
$.each($(this).parent().attr("class").split(" "), function() {
classes += this + "-hitarea ";
});
$(this).addClass( classes );
})
}
// apply event to hitarea
this.find("div." + CLASSES.hitarea).click( toggler );
},
treeview: function(settings) {
settings = $.extend({
cookieId: "treeview"
}, settings);
if ( settings.toggle ) {
var callback = settings.toggle;
settings.toggle = function() {
return callback.apply($(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( $("div." + CLASSES.hitarea, tree).filter(function() {
// for plain toggle, no filter is provided, otherwise we need to check the parent element
return filter ? $(this).parent("." + filter).length : true;
}) );
return false;
};
}
// click on first element to collapse tree
$("a:eq(0)", control).click( handler(CLASSES.collapsable) );
// click on second to expand tree
$("a:eq(1)", control).click( handler(CLASSES.expandable) );
// click on third to toggle tree
$("a:eq(2)", control).click( handler() );
}
// handle toggle event
function toggler() {
$(this)
.parent()
// swap classes for hitarea
.find(">.hitarea")
.swapClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
.swapClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
.end()
// swap classes for parent li
.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 ) {
$(this).parent()
.siblings()
// swap classes for hitarea
.find(">.hitarea")
.replaceClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
.replaceClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea )
.end()
.replaceClass( CLASSES.collapsable, CLASSES.expandable )
.replaceClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
.find( ">ul" )
.heightHide( settings.animated, settings.toggle );
}
}
this.data("toggler", toggler);
function serialize() {
function binary(arg) {
return arg ? 1 : 0;
}
var data = [];
branches.each(function(i, e) {
data[i] = $(e).is(":has(>ul:visible)") ? 1 : 0;
});
$.cookie(settings.cookieId, data.join(""), settings.cookieOptions );
}
function deserialize() {
var stored = $.cookie(settings.cookieId);
if ( stored ) {
var data = stored.split("");
branches.each(function(i, e) {
$(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.toLowerCase() == location.href.toLowerCase();
});
if ( current.length ) {
// TODO update the open/closed classes
var items = current.addClass("selected").parents("ul, li").add( current.next() ).show();
if (settings.prerendered) {
// if prerendered is on, replicate the basic class swapping
items.filter("li")
.swapClass( CLASSES.collapsable, CLASSES.expandable )
.swapClass( CLASSES.lastCollapsable, CLASSES.lastExpandable )
.find(">.hitarea")
.swapClass( CLASSES.collapsableHitarea, CLASSES.expandableHitarea )
.swapClass( CLASSES.lastCollapsableHitarea, CLASSES.lastExpandableHitarea );
}
}
break;
}
branches.applyClasses(settings, toggler);
// if control option is set, create the treecontroller and show it
if ( settings.control ) {
treeController(this, settings.control);
$(settings.control).show();
}
return this;
}
});
// classes used by the plugin
// need to be styled via external stylesheet, see first example
$.treeview = {};
var CLASSES = ($.treeview.classes = {
open: "open",
closed: "closed",
expandable: "expandable",
expandableHitarea: "expandable-hitarea",
lastExpandableHitarea: "lastExpandable-hitarea",
collapsable: "collapsable",
collapsableHitarea: "collapsable-hitarea",
lastCollapsableHitarea: "lastCollapsable-hitarea",
lastCollapsable: "lastCollapsable",
lastExpandable: "lastExpandable",
last: "last",
hitarea: "hitarea"
});
})(jQuery);