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(function($) {
//If the UI scope is not availalable, add it
$.ui = $.ui || {};
//Add methods that are vital for all mouse interaction stuff (plugin registering)
$.extend($.ui, {
plugin: {
add: function(w, c, o, p) {
var a = $.ui[w].prototype; if(!a.plugins[c]) a.plugins[c] = [];
a.plugins[c].push([o,p]);
},
call: function(instance, name, arguments) {
var c = instance.plugins[name]; if(!c) return;
var o = instance.interaction ? instance.interaction.options : instance.options;
var e = instance.interaction ? instance.interaction.element : instance.element;
for (var i = 0; i < c.length; i++) {
if (o[c[i][0]]) c[i][1].apply(e, arguments);
}
}
}
});
$.fn.mouseInteractionDestroy = function() {
this.each(function() {
if($.data(this, "ui-mouse")) $.data(this, "ui-mouse").destroy();
});
}
$.ui.mouseInteraction = function(el,o) {
if(!o) var o = {};
this.element = el;
$.data(this.element, "ui-mouse", this);
this.options = {};
$.extend(this.options, o);
$.extend(this.options, {
handle : o.handle ? ($(o.handle, el)[0] ? $(o.handle, el) : $(el)) : $(el),
helper: o.helper || 'original',
preventionDistance: o.preventionDistance || 0,
dragPrevention: o.dragPrevention ? o.dragPrevention.toLowerCase().split(',') : ['input','textarea','button','select','option'],
cursorAt: { top: ((o.cursorAt && o.cursorAt.top) ? o.cursorAt.top : 0), left: ((o.cursorAt && o.cursorAt.left) ? o.cursorAt.left : 0), bottom: ((o.cursorAt && o.cursorAt.bottom) ? o.cursorAt.bottom : 0), right: ((o.cursorAt && o.cursorAt.right) ? o.cursorAt.right : 0) },
cursorAtIgnore: (!o.cursorAt) ? true : false, //Internal property
appendTo: o.appendTo || 'parent'
})
o = this.options; //Just Lazyness
if(!this.options.nonDestructive && (o.helper == 'clone' || o.helper == 'original')) {
// Let's save the margins for better reference
o.margins = {
top: parseInt($(el).css('marginTop')) || 0,
left: parseInt($(el).css('marginLeft')) || 0,
bottom: parseInt($(el).css('marginBottom')) || 0,
right: parseInt($(el).css('marginRight')) || 0
};
// We have to add margins to our cursorAt
if(o.cursorAt.top != 0) o.cursorAt.top = o.margins.top;
if(o.cursorAt.left != 0) o.cursorAt.left += o.margins.left;
if(o.cursorAt.bottom != 0) o.cursorAt.bottom += o.margins.bottom;
if(o.cursorAt.right != 0) o.cursorAt.right += o.margins.right;
if(o.helper == 'original')
o.wasPositioned = $(el).css('position');
} else {
o.margins = { top: 0, left: 0, right: 0, bottom: 0 };
}
var self = this;
this.mousedownfunc = function(e) { // Bind the mousedown event
return self.click.apply(self, [e]);
}
o.handle.bind('mousedown', this.mousedownfunc);
//Prevent selection of text when starting the drag in IE
if($.browser.msie) $(this.element).attr('unselectable', 'on');
}
$.extend($.ui.mouseInteraction.prototype, {
plugins: {},
currentTarget: null,
lastTarget: null,
timer: null,
slowMode: false,
init: false,
destroy: function() {
this.options.handle.unbind('mousedown', this.mousedownfunc);
},
trigger: function(e) {
return this.click.apply(this, arguments);
},
click: function(e) {
var o = this.options;
window.focus();
if(e.which != 1) return true; //only left click starts dragging
// Prevent execution on defined elements
var targetName = (e.target) ? e.target.nodeName.toLowerCase() : e.srcElement.nodeName.toLowerCase();
for(var i=0;i<o.dragPrevention.length;i++) {
if(targetName == o.dragPrevention[i]) return true;
}
//Prevent execution on condition
if(o.startCondition && !o.startCondition.apply(this, [e])) return true;
var self = this;
this.mouseup = function(e) { return self.stop.apply(self, [e]); }
this.mousemove = function(e) { return self.drag.apply(self, [e]); }
var initFunc = function() { //This function get's called at bottom or after timeout
$(document).bind('mouseup', self.mouseup);
$(document).bind('mousemove', self.mousemove);
self.opos = [e.pageX,e.pageY]; // Get the original mouse position
}
if(o.preventionTimeout) { //use prevention timeout
if(this.timer) clearInterval(this.timer);
this.timer = setTimeout(function() { initFunc(); }, o.preventionTimeout);
return false;
}
initFunc();
return false;
},
start: function(e) {
var o = this.options; var a = this.element;
o.co = $(a).offset(); //get the current offset
this.helper = typeof o.helper == 'function' ? $(o.helper.apply(a, [e,this]))[0] : (o.helper == 'clone' ? $(a).clone()[0] : a);
if(o.appendTo == 'parent') { // Let's see if we have a positioned parent
var cp = a.parentNode;
while (cp) {
if(cp.style && ($(cp).css('position') == 'relative' || $(cp).css('position') == 'absolute')) {
o.pp = cp;
o.po = $(cp).offset();
o.ppOverflow = !!($(o.pp).css('overflow') == 'auto' || $(o.pp).css('overflow') == 'scroll'); //TODO!
break;
}
cp = cp.parentNode ? cp.parentNode : null;
};
if(!o.pp) o.po = { top: 0, left: 0 };
}
this.pos = [this.opos[0],this.opos[1]]; //Use the relative position
this.rpos = [this.pos[0],this.pos[1]]; //Save the absolute position
if(o.cursorAtIgnore) { // If we want to pick the element where we clicked, we borrow cursorAt and add margins
o.cursorAt.left = this.pos[0] - o.co.left + o.margins.left;
o.cursorAt.top = this.pos[1] - o.co.top + o.margins.top;
}
if(o.pp) { // If we have a positioned parent, we pick the draggable relative to it
this.pos[0] -= o.po.left;
this.pos[1] -= o.po.top;
}
this.slowMode = (o.cursorAt && (o.cursorAt.top-o.margins.top > 0 || o.cursorAt.bottom-o.margins.bottom > 0) && (o.cursorAt.left-o.margins.left > 0 || o.cursorAt.right-o.margins.right > 0)) ? true : false; //If cursorAt is within the helper, set slowMode to true
if(!o.nonDestructive) $(this.helper).css('position', 'absolute');
if(o.helper != 'original') $(this.helper).appendTo((o.appendTo == 'parent' ? a.parentNode : o.appendTo)).show();
// Remap right/bottom properties for cursorAt to left/top
if(o.cursorAt.right && !o.cursorAt.left) o.cursorAt.left = this.helper.offsetWidth+o.margins.right+o.margins.left - o.cursorAt.right;
if(o.cursorAt.bottom && !o.cursorAt.top) o.cursorAt.top = this.helper.offsetHeight+o.margins.top+o.margins.bottom - o.cursorAt.bottom;
this.init = true;
if(o._start) o._start.apply(a, [this.helper, this.pos, o.cursorAt, this, e]); // Trigger the start callback
this.helperSize = { width: outerWidth(this.helper), height: outerHeight(this.helper) }; //Set helper size property
return false;
},
stop: function(e) {
var o = this.options; var a = this.element; var self = this;
$(document).unbind('mouseup', self.mouseup);
$(document).unbind('mousemove', self.mousemove);
if(this.init == false) return this.opos = this.pos = null;
if(o._beforeStop) o._beforeStop.apply(a, [this.helper, this.pos, o.cursorAt, this, e]);
if(this.helper != a && !o.beQuietAtEnd) { // Remove helper, if it's not the original node
$(this.helper).remove(); this.helper = null;
}
if(!o.beQuietAtEnd) {
//if(o.wasPositioned) $(a).css('position', o.wasPositioned);
if(o._stop) o._stop.apply(a, [this.helper, this.pos, o.cursorAt, this, e]);
}
this.init = false;
this.opos = this.pos = null;
return false;
},
drag: function(e) {
if (!this.opos || ($.browser.msie && !e.button)) return this.stop.apply(this, [e]); // check for IE mouseup when moving into the document again
var o = this.options;
this.pos = [e.pageX,e.pageY]; //relative mouse position
if(this.rpos && this.rpos[0] == this.pos[0] && this.rpos[1] == this.pos[1]) return false;
this.rpos = [this.pos[0],this.pos[1]]; //absolute mouse position
if(o.pp) { //If we have a positioned parent, use a relative position
this.pos[0] -= o.po.left;
this.pos[1] -= o.po.top;
}
if( (Math.abs(this.rpos[0]-this.opos[0]) > o.preventionDistance || Math.abs(this.rpos[1]-this.opos[1]) > o.preventionDistance) && this.init == false) //If position is more than x pixels from original position, start dragging
this.start.apply(this,[e]);
else {
if(this.init == false) return false;
}
if(o._drag) o._drag.apply(this.element, [this.helper, this.pos, o.cursorAt, this, e]);
return false;
}
});
var num = function(el, prop) {
return parseInt($.css(el.jquery?el[0]:el,prop))||0;
};
function outerWidth(el) {
var $el = $(el), ow = $el.width();
for (var i = 0, props = ['borderLeftWidth', 'paddingLeft', 'paddingRight', 'borderRightWidth']; i < props.length; i++)
ow += num($el, props[i]);
return ow;
}
function outerHeight(el) {
var $el = $(el), oh = $el.width();
for (var i = 0, props = ['borderTopWidth', 'paddingTop', 'paddingBottom', 'borderBottomWidth']; i < props.length; i++)
oh += num($el, props[i]);
return oh;
}
})($);
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