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jquery.columnview.js
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jquery.columnview.js
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/*!
* mapAttributes jQuery Plugin v1.0.0
*
* Copyright 2010, Michael Riddle
* Licensed under the MIT
* http://jquery.org/license
*
* Date: Sun Mar 28 05:49:39 2010 -0900
*/
jQuery.fn.mapAttributes = function(prefix) {
var maps = [];
$(this).each(function() {
var map = {};
for(var key in this.attributes) {
if(!isNaN(key)) {
if(!prefix || this.attributes[key].name.substr(0,prefix.length) == prefix) {
map[this.attributes[key].name] = this.attributes[key].value;
}
}
}
maps.push(map);
});
return (maps.length > 1 ? maps : maps[0]);
};
/**
* jquery.columnview-1.3.js
*
* Created by Chris Yates on 2009-02-26.
* http://christianyates.com
*
* Copyright 2009 Christian Yates and ASU Mars Space Flight Facility. All rights reserved.
* Copyright 2011 Manuel Odendahl <wesen@ruinwesen.com>
* Copyright 2012 James Roberts <feedthefire@gmail.com>
*
* Supported under jQuery 1.5.x or later
*
* Dual licensed under MIT and GPL.
*/
(function($) {
var defaults = {
height: '100px', // Height of containerobj
multi: false, // Allow multiple selections
preview: true, // Handler for preview pane
fixedwidth: false, // Use fixed width columns
addCSS: true, // enable to have columnview automatically insert its CSS
useCanvas: true, // enable to have columnview generate a canvas arrow to indicate subcategories
attrs: [], // attributes to pull from original items
autoFocus: true, // focus to column onclick
getSubtree: undefined, // callback for getting new data
onChange: undefined // callback for onclick
};
// Firefox doesn't repeat keydown events when the key is held, so we use
// keypress with FF/Gecko/Mozilla to enable continuous keyboard scrolling.
var key_event = $.browser.mozilla ? 'keypress' : 'keydown';
/**
* default subtree function, returns child elements of the original list.
**/
var getSubtree = function (elt) {
var children = $(elt).data("sub");
if (children) {
return children.children('li');
} else {
return $(elt).children('li');
}
};
var methods = {
init: function (options) {
var $this = $(this);
var data = $this.data("columnview");
if (data) {
/* plugin has already been initialized */
console.log("already initialized");
return $this;
}
var settings = $.extend({}, defaults, options);
/* fix order of declaration */
if (!settings.getSubtree) {
settings.getSubtree = getSubtree;
}
if (settings.addCSS) {
addCSS();
}
// Hide original list
$(this).hide();
// Reset the original list's id
var origid = $this.attr('id');
// Create new top container
var $container = $('<div/>').addClass('containerobj').css({'height':settings.height}).attr({'id':origid + '-columnview-container'}).insertAfter($this);
var $topdiv = $('<div class="top"></div>').appendTo($container);
data = { settings: settings,
container: $container,
origElt: $this };
$this.data("columnview", data);
$container.data("columnview", data);
/* populate the first column */
submenu($container, $this, $topdiv);
/* bind events on the newly created column entries */
$container.bind("click dblclick " + key_event, methods.handleEvent);
return $this;
},
container: function () {
var data = $(this).data("columnview");
if (!data) {
return;
}
return data.container;
},
/**
* Handle a click event on an item inside the menu.
*
* Pass shiftKey and metaKey for multiple selection purposes.
**/
handleClick: function (self, shiftKey, metaKey) {
var $self = $(self);
var $container = $self.parents('div.containerobj:first');
var data = $container.data("columnview");
if (!data) {
return;
}
var container = data.container;
var origElt = data.origElt;
var settings = data.settings;
$self.focus();
var level = $('div', container).index($self.parents('div'));
// Remove blocks to the right in the tree, and 'deactivate' other
// links within the same level, if metakey is not being used
$('div:gt('+level+')', container).remove();
if (metaKey) {
/* on meta key, toggle selections, and remove nothing */
if ($self.hasClass('active')) {
$self.removeClass('active');
} else {
$self.addClass('active');
}
} else if (shiftKey) {
// Select intermediate items when shift clicking
// Sorry, only works with jQuery 1.4 due to changes in the .index() function
var first = $('a.active:first', $self.parent()).index();
var cur = $self.index();
var range = [first, cur].sort(function(a,b) { return a - b; });
$('div:eq('+level+') a', container).slice(range[0], range[1]).addClass('active');
$self.addClass('active');
} else {
$('div:eq('+level+') a', container)
.removeClass('active')
.removeClass('inpath');
$('.active', container).addClass('inpath');
$('div:lt('+level+') a', container).removeClass('active');
$self.addClass('active');
if ($self.hasClass("hasChildMenu")) {
// Menu has children, so add another submenu
submenu(container, $self);
/* triggering will happen in submenu */
return;
} else {
// No children, show title instead (if it exists, or a link)
if (settings.preview) {
// If preview, append preview pane
var previewcontainer = $('<div/>').addClass('feature').appendTo(container);
// Fire preview handler function
if ($.isFunction(settings.preview)) {
// We're passing the element back to the callback
var preview = settings.preview($self);
} else {
// If preview is not a function, use a default behavior
var title = $('<a/>')
.attr({href: $self.attr('href')})
.text($self.attr('title') ? $self.attr('title') : $self.text());
$(previewcontainer).html(title);
}
}
// Set the width
var remainingspace = 0;
$.each($(container).children('div').slice(0,-1),function(i,item){
remainingspace += $(item).width();
});
var fillwidth = $(container).width() - remainingspace;
$(previewcontainer).css({'top':0,'left':remainingspace}).width(fillwidth).show();
}
}
origElt.trigger("columnview_select", [container.find(".active")]);
},
/**
* Navigate to an item with attrName = key.
*
* attrName is "name" by default.
*
* This looks up the item in the original list, and clicks its way
* through the parents to reach it (it will thus call onchange on
* the intermediate items, just as if the user navigated to it).
*
**/
navigateTo: function (key, attrName) {
var $this = $(this);
var $container;
if ($this.hasClass('containerobj')) {
$container = $this;
} else {
$container = $this.parents('div.containerobj:first');
}
var data = $container.data("columnview");
if (!data) {
return;
}
var container = data.container;
var origElt = data.origElt;
var settings = data.settings;
if (!attrName) {
attrName = "name";
}
var origLinks = origElt.find("[" + attrName + "=" + key + "]").parentsUntil(origElt).filter("li").find(":eq(0)");
var keys = origLinks.map(function (i, elt) { return $(elt).attr(attrName); }).toArray().reverse();
$.each(keys, function (i, elt) {
var entry = container.find("[" + attrName + "=" + elt + "]");
methods.handleClick(entry);
});
},
// Event handling functions
handleEvent: function (event) {
var $this = $(this);
var $self = undefined;
var data = $this.data("columnview");
if (!data) {
return;
}
var container = data.container;
var origElt = data.origElt;
var settings = data.settings;
var $target = $(event.target);
if ($target.is("a,span")) {
if ($target.is("span")){
$self = $target.parent();
}
else {
$self = $target;
}
if (!settings.multi) {
delete event.shiftKey;
delete event.metaKey;
}
$self.focus();
if (event.type == "dblclick") {
origElt.trigger("columnview_dblclick", [$self]);
}
// Handle clicks
if (event.type == "click") {
methods.handleClick($self, event.shiftKey, event.metaKey);
if(settings.onChange) settings.onChange(container.find(".active"));
if(settings.autoFocus) container.scrollLeft($self.offsetParent().offset().left);
}
// Handle Keyboard navigation
if (event.type == key_event){
console.log(event.keyCode);
switch (event.keyCode){
case (37): //left
$self.parent().prev().children('.inpath').focus().trigger("click");
break;
case (38): //up
$self.prev().focus().trigger("click");
break;
case (39): //right
if ($self.hasClass('hasChildMenu')) {
$self.parent().next().children('a:first').focus().trigger("click");
}
break;
case (40): //down
$self.next().focus().trigger("click");
break;
case (13): //enter
$self.trigger("dblclick");
break;
}
}
event.preventDefault();
}
}
};
/**
* Dispatcher method for the jQuery plugin. Call without arguments
* or options to call the initializer, or pass a method name and
* arguments:
*
* $(elt).columnview();
* $(elt).columnview('navigateTo', 'foobar');
*
**/
$.fn.columnview = function(method) {
if ( methods[method] ) {
return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || ! method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist on jQuery.columnview ');
}
};
// Generate deeper level menus
function submenu(container, node, submenu) {
var data = container.data("columnview");
if (!data) {
return;
}
var origElt = data.origElt;
var settings = data.settings;
var width = false;
if (settings.fixedwidth || $.browser.msie) {
width = typeof settings.fixedwidth == "string" ? settings.fixedwidth : '200px';
}
var leftPos = 0;
$.each($(container).children('div'), function(i, mydiv){
leftPos += $(mydiv).width();
});
if (!submenu) {
submenu = $('<div/>').css({'top':0, 'left':leftPos}).appendTo(container);
}
// Set column width
if (width) {
$(submenu).width(width);
}
var appendItems = function (items) {
submenu.html('');
$.each($(items), function(i, item) {
var $item = $(item);
var $subitem = $('a:eq(0)', $item)
.clone(true)
.wrapInner('<span class="label" />')
.data('sub', $item.children('ul'))
.appendTo(submenu);
if (!$subitem.length) {
/* something went wrong with finding an inner item */
return;
}
if(settings.attrs && settings.attrs.length > 0){
$.each(settings.attrs,function(i,attr){
if($item.attr(attr)) $subitem.attr(attr,$item.attr(attr)).data(attr,$item.attr(attr));
});
}
if (width) {
$subitem.css({'text-overflow': 'ellipsis',
'-o-text-overflow': 'ellipsis',
'-ms-text-overflow': 'ellipsis'} );
}
if ($subitem.data('sub').length || $item.attr("hasChildren")) {
$subitem.addClass('hasChildMenu');
addWidget(settings, $subitem);
}
});
/* trigger only after the data is added, not in handleEvent as there could be a deferred in between */
origElt.trigger("columnview_select", [$(node)]);
};
var res = settings.getSubtree($(node), $(node).attr("id") == $(origElt).attr("id"));
/* check if getSubtree returned a deferred promise. */
if (res && res.promise) {
$(submenu.append('<span class="loading">Loading...</span>'));
res.promise().then(appendItems);
} else {
appendItems(res);
}
}
/***************************************************************************
*
* Graphics and CSS stuff
*
***************************************************************************/
// Uses canvas, if available, to draw a triangle to denote that item is a parent
function addWidget(settings, item, color){
var useCss = false;
if (!settings.useCanvas) {
useCss = true;
} else {
var triheight = $(item).height();
var canvas = $("<canvas></canvas>")
.attr({height: triheight,
width: 10})
.addClass('widget').appendTo(item);
if (!color) {
color = $(canvas).css('color');
}
canvas = $(canvas).get(0);
if (canvas.getContext){
var context = canvas.getContext('2d');
context.fillStyle = color;
context.beginPath();
context.moveTo(3,(triheight/2 - 3));
context.lineTo(10,(triheight/2));
context.lineTo(3,(triheight/2 + 3));
context.fill();
} else {
useCss = true;
}
}
if (useCss) {
/**
* Canvas not supported - put something in there anyway that can be
* suppressed later if desired. We're using a decimal character here
* representing a "black right-pointing pointer" in Windows since IE
* is the likely case that doesn't support canvas.
*/
$("<span>►</span>").addClass('widget').css({'height':triheight,'width':10}).prependTo(item);
}
$('.widget').bind('click', function(event){
event.preventDefault();
});
}
function addCSS() {
// Add stylesheet, but only once
if (!$('.containerobj').get(0)) {
$('head').prepend('\
<style type="text/css" media="screen">\
.containerobj {\
border: 1px solid #ccc;\
height:5em;\
overflow-x:auto;\
overflow-y:hidden;\
white-space:nowrap;\
position:relative;\
}\
.containerobj div {\
height:100%;\
overflow-y:scroll;\
overflow-x:hidden;\
position:absolute;\
}\
.containerobj a {\
display:block;\
white-space:nowrap;\
clear:both;\
padding-right:15px;\
overflow:hidden;\
text-decoration:none;\
}\
.containerobj a:focus {\
outline:none;\
}\
.containerobj a canvas {\
}\
.containerobj .feature {\
min-width:200px;\
overflow-y:auto;\
}\
.containerobj .feature a {\
white-space:normal;\
}\
.containerobj .hasChildMenu {\
}\
.containerobj .active {\
background-color:#3671cf;\
color:#fff;\
}\
.containerobj .inpath {\
background-color:#d0d0d0;\
color:#000;\
}\
.containerobj .hasChildMenu .widget {\
color:black;\
position:absolute;\
right:0;\
text-decoration:none;\
font-size:0.7em;\
}\
</style>');
}
}
})(jQuery);