jquery-ui/ui/jquery.ui.selectable.js

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/*!
* jQuery UI Selectable @VERSION
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*
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* Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
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* http://docs.jquery.com/UI/Selectables
*
* Depends:
* jquery.ui.core.js
* jquery.ui.mouse.js
* jquery.ui.widget.js
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*/
(function( $, undefined ) {
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$.widget("ui.selectable", $.ui.mouse, {
version: "@VERSION",
options: {
appendTo: 'body',
autoRefresh: true,
distance: 0,
filter: '*',
tolerance: 'touch'
},
_create: function() {
var that = 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
var selectees;
this.refresh = function() {
selectees = $(that.options.filter, that.element[0]);
selectees.addClass("ui-selectee");
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selectees.each(function() {
var $this = $(this);
var pos = $this.offset();
$.data(this, "selectable-item", {
element: this,
$element: $this,
left: pos.left,
top: pos.top,
right: pos.left + $this.outerWidth(),
bottom: pos.top + $this.outerHeight(),
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startselected: false,
selected: $this.hasClass('ui-selected'),
selecting: $this.hasClass('ui-selecting'),
unselecting: $this.hasClass('ui-unselecting')
});
});
};
this.refresh();
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this.selectees = selectees.addClass("ui-selectee");
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this._mouseInit();
this.helper = $("<div class='ui-selectable-helper'></div>");
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},
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_destroy: function() {
this.selectees
.removeClass("ui-selectee")
.removeData("selectable-item");
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this.element
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.removeClass("ui-selectable ui-selectable-disabled");
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this._mouseDestroy();
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},
_mouseStart: function(event) {
var that = this;
this.opos = [event.pageX, event.pageY];
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if (this.options.disabled)
return;
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var options = this.options;
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this.selectees = $(options.filter, this.element[0]);
this._trigger("start", event);
$(options.appendTo).append(this.helper);
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// position helper (lasso)
this.helper.css({
"left": event.clientX,
"top": event.clientY,
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"width": 0,
"height": 0
});
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if (options.autoRefresh) {
this.refresh();
}
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this.selectees.filter('.ui-selected').each(function() {
var selectee = $.data(this, "selectable-item");
selectee.startselected = true;
if (!event.metaKey && !event.ctrlKey) {
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selectee.$element.removeClass('ui-selected');
selectee.selected = false;
selectee.$element.addClass('ui-unselecting');
selectee.unselecting = true;
// selectable UNSELECTING callback
that._trigger("unselecting", event, {
unselecting: selectee.element
});
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}
});
$(event.target).parents().andSelf().each(function() {
var selectee = $.data(this, "selectable-item");
if (selectee) {
var doSelect = (!event.metaKey && !event.ctrlKey) || !selectee.$element.hasClass('ui-selected');
selectee.$element
.removeClass(doSelect ? "ui-unselecting" : "ui-selected")
.addClass(doSelect ? "ui-selecting" : "ui-unselecting");
selectee.unselecting = !doSelect;
selectee.selecting = doSelect;
selectee.selected = doSelect;
// selectable (UN)SELECTING callback
if (doSelect) {
that._trigger("selecting", event, {
selecting: selectee.element
});
} else {
that._trigger("unselecting", event, {
unselecting: selectee.element
});
}
return false;
}
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});
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},
_mouseDrag: function(event) {
var that = this;
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this.dragged = true;
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if (this.options.disabled)
return;
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var options = this.options;
var x1 = this.opos[0], y1 = this.opos[1], x2 = event.pageX, y2 = event.pageY;
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if (x1 > x2) { var tmp = x2; x2 = x1; x1 = tmp; }
if (y1 > y2) { var tmp = y2; y2 = y1; y1 = tmp; }
this.helper.css({left: x1, top: y1, width: x2-x1, height: y2-y1});
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this.selectees.each(function() {
var selectee = $.data(this, "selectable-item");
//prevent helper from being selected if appendTo: selectable
if (!selectee || selectee.element == that.element[0])
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return;
var hit = false;
if (options.tolerance == 'touch') {
hit = ( !(selectee.left > x2 || selectee.right < x1 || selectee.top > y2 || selectee.bottom < y1) );
} else if (options.tolerance == 'fit') {
hit = (selectee.left > x1 && selectee.right < x2 && selectee.top > y1 && selectee.bottom < y2);
}
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if (hit) {
// SELECT
if (selectee.selected) {
selectee.$element.removeClass('ui-selected');
selectee.selected = false;
}
if (selectee.unselecting) {
selectee.$element.removeClass('ui-unselecting');
selectee.unselecting = false;
}
if (!selectee.selecting) {
selectee.$element.addClass('ui-selecting');
selectee.selecting = true;
// selectable SELECTING callback
that._trigger("selecting", event, {
selecting: selectee.element
});
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}
} else {
// UNSELECT
if (selectee.selecting) {
if ((event.metaKey || event.ctrlKey) && selectee.startselected) {
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selectee.$element.removeClass('ui-selecting');
selectee.selecting = false;
selectee.$element.addClass('ui-selected');
selectee.selected = true;
} else {
selectee.$element.removeClass('ui-selecting');
selectee.selecting = false;
if (selectee.startselected) {
selectee.$element.addClass('ui-unselecting');
selectee.unselecting = true;
}
// selectable UNSELECTING callback
that._trigger("unselecting", event, {
unselecting: selectee.element
});
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}
}
if (selectee.selected) {
if (!event.metaKey && !event.ctrlKey && !selectee.startselected) {
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selectee.$element.removeClass('ui-selected');
selectee.selected = false;
selectee.$element.addClass('ui-unselecting');
selectee.unselecting = true;
// selectable UNSELECTING callback
that._trigger("unselecting", event, {
unselecting: selectee.element
});
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}
}
}
});
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return false;
},
_mouseStop: function(event) {
var that = this;
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this.dragged = false;
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var options = this.options;
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$('.ui-unselecting', this.element[0]).each(function() {
var selectee = $.data(this, "selectable-item");
selectee.$element.removeClass('ui-unselecting');
selectee.unselecting = false;
selectee.startselected = false;
that._trigger("unselected", event, {
unselected: selectee.element
});
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});
$('.ui-selecting', this.element[0]).each(function() {
var selectee = $.data(this, "selectable-item");
selectee.$element.removeClass('ui-selecting').addClass('ui-selected');
selectee.selecting = false;
selectee.selected = true;
selectee.startselected = true;
that._trigger("selected", event, {
selected: selectee.element
});
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});
this._trigger("stop", event);
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this.helper.remove();
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return false;
}
});
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})(jQuery);