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273 lines
7.8 KiB
JavaScript
273 lines
7.8 KiB
JavaScript
/*
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* jQuery UI Selectable
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*
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* Copyright (c) 2008 Richard D. Worth (rdworth.org)
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Selectables
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*
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* Depends:
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* ui.core.js
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*
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* Revision: $Id: ui.selectable.js 5581 2008-05-13 16:58:03Z scott.gonzalez $
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*/
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;(function($) {
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$.widget("ui.selectable", {
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init: function() {
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var instance = this;
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this.element.addClass("ui-selectable");
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this.dragged = false;
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// cache selectee children based on filter
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var selectees;
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this.refresh = function() {
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selectees = $(instance.options.filter, instance.element[0]);
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selectees.each(function() {
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var $this = $(this);
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var pos = $this.offset();
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$.data(this, "selectable-item", {
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element: this,
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$element: $this,
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left: pos.left,
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top: pos.top,
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right: pos.left + $this.width(),
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bottom: pos.top + $this.height(),
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startselected: false,
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selected: $this.hasClass('ui-selected'),
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selecting: $this.hasClass('ui-selecting'),
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unselecting: $this.hasClass('ui-unselecting')
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});
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});
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};
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this.refresh();
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this.selectees = selectees.addClass("ui-selectee");
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//Initialize mouse interaction
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this.element.mouse({
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executor: this,
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appendTo: 'body',
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delay: 0,
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distance: 0,
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dragPrevention: ['input','textarea','button','select','option'],
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start: this.start,
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stop: this.stop,
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drag: this.drag,
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condition: function(e) {
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var isSelectee = false;
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$(e.target).parents().andSelf().each(function() {
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if($.data(this, "selectable-item")) isSelectee = true;
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});
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return this.options.keyboard ? !isSelectee : true;
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}
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});
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this.helper = $(document.createElement('div')).css({border:'1px dotted black'});
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},
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toggle: function() {
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if(this.disabled){
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this.enable();
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} else {
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this.disable();
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}
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},
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destroy: function() {
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this.element
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.removeClass("ui-selectable ui-selectable-disabled")
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.removeData("selectable")
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.unbind(".selectable")
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.mouse("destroy");
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},
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enable: function() {
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this.element.removeClass("ui-selectable-disabled");
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this.disabled = false;
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},
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disable: function() {
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this.element.addClass("ui-selectable-disabled");
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this.disabled = true;
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},
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start: function(ev, element) {
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this.opos = [ev.pageX, ev.pageY];
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if (this.disabled)
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return;
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var options = this.options;
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this.selectees = $(options.filter, element);
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// selectable START callback
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this.element.triggerHandler("selectablestart", [ev, {
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"selectable": element,
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"options": options
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}], options.start);
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$('body').append(this.helper);
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// position helper (lasso)
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this.helper.css({
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"z-index": 100,
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"position": "absolute",
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"left": ev.clientX,
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"top": ev.clientY,
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"width": 0,
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"height": 0
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});
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if (options.autoRefresh) {
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this.refresh();
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}
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this.selectees.filter('.ui-selected').each(function() {
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var selectee = $.data(this, "selectable-item");
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selectee.startselected = true;
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if (!ev.ctrlKey) {
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selectee.$element.removeClass('ui-selected');
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selectee.selected = false;
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selectee.$element.addClass('ui-unselecting');
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selectee.unselecting = true;
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// selectable UNSELECTING callback
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$(this.element).triggerHandler("selectableunselecting", [ev, {
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selectable: element,
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unselecting: selectee.element,
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options: options
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}], options.unselecting);
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}
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});
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},
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drag: function(ev, element) {
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this.dragged = true;
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if (this.disabled)
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return;
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var options = this.options;
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var x1 = this.opos[0], y1 = this.opos[1], x2 = ev.pageX, y2 = ev.pageY;
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if (x1 > x2) { var tmp = x2; x2 = x1; x1 = tmp; }
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if (y1 > y2) { var tmp = y2; y2 = y1; y1 = tmp; }
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this.helper.css({left: x1, top: y1, width: x2-x1, height: y2-y1});
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this.selectees.each(function() {
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var selectee = $.data(this, "selectable-item");
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//prevent helper from being selected if appendTo: selectable
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if (!selectee || selectee.element == element)
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return;
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var hit = false;
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if (options.tolerance == 'touch') {
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hit = ( !(selectee.left > x2 || selectee.right < x1 || selectee.top > y2 || selectee.bottom < y1) );
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} else if (options.tolerance == 'fit') {
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hit = (selectee.left > x1 && selectee.right < x2 && selectee.top > y1 && selectee.bottom < y2);
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}
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if (hit) {
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// SELECT
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if (selectee.selected) {
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selectee.$element.removeClass('ui-selected');
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selectee.selected = false;
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}
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if (selectee.unselecting) {
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selectee.$element.removeClass('ui-unselecting');
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selectee.unselecting = false;
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}
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if (!selectee.selecting) {
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selectee.$element.addClass('ui-selecting');
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selectee.selecting = true;
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// selectable SELECTING callback
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$(this.element).triggerHandler("selectableselecting", [ev, {
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selectable: element,
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selecting: selectee.element,
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options: options
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}], options.selecting);
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}
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} else {
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// UNSELECT
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if (selectee.selecting) {
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if (ev.ctrlKey && selectee.startselected) {
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selectee.$element.removeClass('ui-selecting');
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selectee.selecting = false;
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selectee.$element.addClass('ui-selected');
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selectee.selected = true;
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} else {
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selectee.$element.removeClass('ui-selecting');
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selectee.selecting = false;
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if (selectee.startselected) {
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selectee.$element.addClass('ui-unselecting');
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selectee.unselecting = true;
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}
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// selectable UNSELECTING callback
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$(this.element).triggerHandler("selectableunselecting", [ev, {
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selectable: element,
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unselecting: selectee.element,
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options: options
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}], options.unselecting);
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}
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}
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if (selectee.selected) {
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if (!ev.ctrlKey && !selectee.startselected) {
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selectee.$element.removeClass('ui-selected');
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selectee.selected = false;
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selectee.$element.addClass('ui-unselecting');
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selectee.unselecting = true;
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// selectable UNSELECTING callback
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$(this.element).triggerHandler("selectableunselecting", [ev, {
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selectable: element,
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unselecting: selectee.element,
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options: options
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}], options.unselecting);
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}
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}
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}
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});
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},
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stop: function(ev, element) {
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this.dragged = false;
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var options = this.options;
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$('.ui-unselecting', this.element).each(function() {
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var selectee = $.data(this, "selectable-item");
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selectee.$element.removeClass('ui-unselecting');
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selectee.unselecting = false;
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selectee.startselected = false;
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$(this.element).triggerHandler("selectableunselected", [ev, {
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selectable: element,
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unselected: selectee.element,
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options: options
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}], options.unselected);
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});
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$('.ui-selecting', this.element).each(function() {
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var selectee = $.data(this, "selectable-item");
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selectee.$element.removeClass('ui-selecting').addClass('ui-selected');
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selectee.selecting = false;
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selectee.selected = true;
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selectee.startselected = true;
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$(this.element).triggerHandler("selectableselected", [ev, {
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selectable: element,
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selected: selectee.element,
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options: options
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}], options.selected);
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});
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$(this.element).triggerHandler("selectablestop", [ev, {
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selectable: element,
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options: this.options
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}], this.options.stop);
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this.helper.remove();
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}
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});
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$.ui.selectable.defaults = {
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appendTo: 'body',
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autoRefresh: true,
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filter: '*',
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tolerance: 'touch'
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};
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})(jQuery);
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