mirror of
https://github.com/jquery/jquery-ui.git
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800 lines
29 KiB
JavaScript
800 lines
29 KiB
JavaScript
/*
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* jQuery UI Draggable @VERSION
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*
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* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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*
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* http://docs.jquery.com/UI/Draggables
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.mouse.js
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* jquery.ui.widget.js
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*/
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(function( $, undefined ) {
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$.widget("ui.draggable", $.ui.mouse, {
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widgetEventPrefix: "drag",
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options: {
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addClasses: true,
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appendTo: "parent",
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axis: false,
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connectToSortable: false,
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containment: false,
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cursor: "auto",
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cursorAt: false,
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grid: false,
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handle: false,
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helper: "original",
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iframeFix: false,
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opacity: false,
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refreshPositions: false,
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revert: false,
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revertDuration: 500,
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scope: "default",
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scroll: true,
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scrollSensitivity: 20,
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scrollSpeed: 20,
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snap: false,
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snapMode: "both",
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snapTolerance: 20,
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stack: false,
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zIndex: false
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},
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_create: function() {
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if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))
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this.element[0].style.position = 'relative';
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(this.options.addClasses && this.element.addClass("ui-draggable"));
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(this.options.disabled && this.element.addClass("ui-draggable-disabled"));
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this._mouseInit();
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},
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destroy: function() {
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if(!this.element.data('draggable')) return;
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this.element
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.removeData("draggable")
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.unbind(".draggable")
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.removeClass("ui-draggable"
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+ " ui-draggable-dragging"
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+ " ui-draggable-disabled");
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this._mouseDestroy();
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return this;
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},
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_mouseCapture: function(event) {
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var o = this.options;
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// among others, prevent a drag on a resizable-handle
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if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))
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return false;
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//Quit if we're not on a valid handle
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this.handle = this._getHandle(event);
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if (!this.handle)
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return false;
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return true;
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},
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_mouseStart: function(event) {
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var o = this.options;
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//Create and append the visible helper
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this.helper = this._createHelper(event);
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//Cache the helper size
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this._cacheHelperProportions();
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//If ddmanager is used for droppables, set the global draggable
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if($.ui.ddmanager)
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$.ui.ddmanager.current = this;
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/*
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* - Position generation -
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* This block generates everything position related - it's the core of draggables.
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*/
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//Cache the margins of the original element
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this._cacheMargins();
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//Store the helper's css position
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this.cssPosition = this.helper.css("position");
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this.scrollParent = this.helper.scrollParent();
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//The element's absolute position on the page minus margins
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this.offset = this.positionAbs = this.element.offset();
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this.offset = {
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top: this.offset.top - this.margins.top,
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left: this.offset.left - this.margins.left
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};
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$.extend(this.offset, {
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click: { //Where the click happened, relative to the element
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left: event.pageX - this.offset.left,
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top: event.pageY - this.offset.top
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},
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parent: this._getParentOffset(),
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relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
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});
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//Generate the original position
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this.originalPosition = this.position = this._generatePosition(event);
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this.originalPageX = event.pageX;
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this.originalPageY = event.pageY;
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//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
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(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
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//Set a containment if given in the options
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if(o.containment)
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this._setContainment();
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//Trigger event + callbacks
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if(this._trigger("start", event) === false) {
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this._clear();
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return false;
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}
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//Recache the helper size
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this._cacheHelperProportions();
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//Prepare the droppable offsets
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if ($.ui.ddmanager && !o.dropBehaviour)
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$.ui.ddmanager.prepareOffsets(this, event);
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this.helper.addClass("ui-draggable-dragging");
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this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position
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return true;
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},
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_mouseDrag: function(event, noPropagation) {
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//Compute the helpers position
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this.position = this._generatePosition(event);
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this.positionAbs = this._convertPositionTo("absolute");
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//Call plugins and callbacks and use the resulting position if something is returned
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if (!noPropagation) {
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var ui = this._uiHash();
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if(this._trigger('drag', event, ui) === false) {
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this._mouseUp({});
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return false;
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}
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this.position = ui.position;
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}
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if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
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if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
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if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
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return false;
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},
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_mouseStop: function(event) {
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//If we are using droppables, inform the manager about the drop
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var dropped = false;
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if ($.ui.ddmanager && !this.options.dropBehaviour)
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dropped = $.ui.ddmanager.drop(this, event);
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//if a drop comes from outside (a sortable)
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if(this.dropped) {
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dropped = this.dropped;
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this.dropped = false;
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}
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//if the original element is removed, don't bother to continue
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if(!this.element[0] || !this.element[0].parentNode)
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return false;
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if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
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var self = this;
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$(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
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if(self._trigger("stop", event) !== false) {
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self._clear();
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}
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});
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} else {
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if(this._trigger("stop", event) !== false) {
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this._clear();
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}
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}
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return false;
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},
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cancel: function() {
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if(this.helper.is(".ui-draggable-dragging")) {
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this._mouseUp({});
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} else {
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this._clear();
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}
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return this;
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},
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_getHandle: function(event) {
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var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
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$(this.options.handle, this.element)
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.find("*")
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.andSelf()
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.each(function() {
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if(this == event.target) handle = true;
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});
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return handle;
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},
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_createHelper: function(event) {
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var o = this.options;
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var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);
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if(!helper.parents('body').length)
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helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
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if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))
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helper.css("position", "absolute");
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return helper;
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},
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_adjustOffsetFromHelper: function(obj) {
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if (typeof obj == 'string') {
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obj = obj.split(' ');
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}
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if ($.isArray(obj)) {
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obj = {left: +obj[0], top: +obj[1] || 0};
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}
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if ('left' in obj) {
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this.offset.click.left = obj.left + this.margins.left;
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}
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if ('right' in obj) {
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this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
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}
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if ('top' in obj) {
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this.offset.click.top = obj.top + this.margins.top;
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}
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if ('bottom' in obj) {
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this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
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}
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},
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_getParentOffset: function() {
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//Get the offsetParent and cache its position
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this.offsetParent = this.helper.offsetParent();
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var po = this.offsetParent.offset();
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// This is a special case where we need to modify a offset calculated on start, since the following happened:
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// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
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// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
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// the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
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if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
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po.left += this.scrollParent.scrollLeft();
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po.top += this.scrollParent.scrollTop();
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}
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if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
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|| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
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po = { top: 0, left: 0 };
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return {
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top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
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left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
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};
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},
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_getRelativeOffset: function() {
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if(this.cssPosition == "relative") {
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var p = this.element.position();
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return {
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top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
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left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
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};
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} else {
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return { top: 0, left: 0 };
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}
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},
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_cacheMargins: function() {
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this.margins = {
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left: (parseInt(this.element.css("marginLeft"),10) || 0),
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top: (parseInt(this.element.css("marginTop"),10) || 0),
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right: (parseInt(this.element.css("marginRight"),10) || 0),
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bottom: (parseInt(this.element.css("marginBottom"),10) || 0)
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};
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},
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_cacheHelperProportions: function() {
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this.helperProportions = {
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width: this.helper.outerWidth(),
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height: this.helper.outerHeight()
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};
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},
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_setContainment: function() {
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var o = this.options;
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if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
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if(o.containment == 'document' || o.containment == 'window') this.containment = [
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(o.containment == 'document' ? 0 : $(window).scrollLeft()) - this.offset.relative.left - this.offset.parent.left,
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(o.containment == 'document' ? 0 : $(window).scrollTop()) - this.offset.relative.top - this.offset.parent.top,
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(o.containment == 'document' ? 0 : $(window).scrollLeft()) + $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
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(o.containment == 'document' ? 0 : $(window).scrollTop()) + ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
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];
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if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) {
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var ce = $(o.containment)[0]; if(!ce) return;
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var co = $(o.containment).offset();
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var over = ($(ce).css("overflow") != 'hidden');
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this.containment = [
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co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0),
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co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0),
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co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left - this.margins.right,
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co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top - this.margins.bottom
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];
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} else if(o.containment.constructor == Array) {
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this.containment = o.containment;
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}
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},
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_convertPositionTo: function(d, pos) {
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if(!pos) pos = this.position;
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var mod = d == "absolute" ? 1 : -1;
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var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
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return {
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top: (
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pos.top // The absolute mouse position
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+ this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent
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+ this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border)
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- ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
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),
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left: (
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pos.left // The absolute mouse position
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+ this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent
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+ this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border)
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- ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
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)
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};
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},
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_generatePosition: function(event) {
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var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
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var pageX = event.pageX;
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var pageY = event.pageY;
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/*
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* - Position constraining -
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* Constrain the position to a mix of grid, containment.
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*/
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if(this.originalPosition) { //If we are not dragging yet, we won't check for options
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if(this.containment) {
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if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
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if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
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if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
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if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
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}
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if(o.grid) {
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var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
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pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] || top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
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var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
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pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] || left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
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}
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}
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return {
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top: (
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pageY // The absolute mouse position
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- this.offset.click.top // Click offset (relative to the element)
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- this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent
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- this.offset.parent.top // The offsetParent's offset without borders (offset + border)
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+ ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
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),
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left: (
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pageX // The absolute mouse position
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- this.offset.click.left // Click offset (relative to the element)
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- this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent
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- this.offset.parent.left // The offsetParent's offset without borders (offset + border)
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+ ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
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)
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};
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},
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_clear: function() {
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this.helper.removeClass("ui-draggable-dragging");
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if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();
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//if($.ui.ddmanager) $.ui.ddmanager.current = null;
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this.helper = null;
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this.cancelHelperRemoval = false;
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},
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// From now on bulk stuff - mainly helpers
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_trigger: function(type, event, ui) {
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ui = ui || this._uiHash();
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$.ui.plugin.call(this, type, [event, ui]);
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if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins
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return $.Widget.prototype._trigger.call(this, type, event, ui);
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},
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plugins: {},
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_uiHash: function(event) {
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return {
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helper: this.helper,
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position: this.position,
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originalPosition: this.originalPosition,
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offset: this.positionAbs
|
|
};
|
|
}
|
|
|
|
});
|
|
|
|
$.extend($.ui.draggable, {
|
|
version: "@VERSION"
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "connectToSortable", {
|
|
start: function(event, ui) {
|
|
|
|
var inst = $(this).data("draggable"), o = inst.options,
|
|
uiSortable = $.extend({}, ui, { item: inst.element });
|
|
inst.sortables = [];
|
|
$(o.connectToSortable).each(function() {
|
|
var sortable = $.data(this, 'sortable');
|
|
if (sortable && !sortable.options.disabled) {
|
|
inst.sortables.push({
|
|
instance: sortable,
|
|
shouldRevert: sortable.options.revert
|
|
});
|
|
sortable.refreshPositions(); // Call the sortable's refreshPositions at drag start to refresh the containerCache since the sortable container cache is used in drag and needs to be up to date (this will ensure it's initialised as well as being kept in step with any changes that might have happened on the page).
|
|
sortable._trigger("activate", event, uiSortable);
|
|
}
|
|
});
|
|
|
|
},
|
|
stop: function(event, ui) {
|
|
|
|
//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
|
|
var inst = $(this).data("draggable"),
|
|
uiSortable = $.extend({}, ui, { item: inst.element });
|
|
|
|
$.each(inst.sortables, function() {
|
|
if(this.instance.isOver) {
|
|
|
|
this.instance.isOver = 0;
|
|
|
|
inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
|
|
this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
|
|
|
|
//The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid'
|
|
if(this.shouldRevert) this.instance.options.revert = true;
|
|
|
|
//Trigger the stop of the sortable
|
|
this.instance._mouseStop(event);
|
|
|
|
this.instance.options.helper = this.instance.options._helper;
|
|
|
|
//If the helper has been the original item, restore properties in the sortable
|
|
if(inst.options.helper == 'original')
|
|
this.instance.currentItem.css({ top: 'auto', left: 'auto' });
|
|
|
|
} else {
|
|
this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
|
|
this.instance._trigger("deactivate", event, uiSortable);
|
|
}
|
|
|
|
});
|
|
|
|
},
|
|
drag: function(event, ui) {
|
|
|
|
var inst = $(this).data("draggable"), self = this;
|
|
|
|
var checkPos = function(o) {
|
|
var dyClick = this.offset.click.top, dxClick = this.offset.click.left;
|
|
var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;
|
|
var itemHeight = o.height, itemWidth = o.width;
|
|
var itemTop = o.top, itemLeft = o.left;
|
|
|
|
return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);
|
|
};
|
|
|
|
$.each(inst.sortables, function(i) {
|
|
|
|
//Copy over some variables to allow calling the sortable's native _intersectsWith
|
|
this.instance.positionAbs = inst.positionAbs;
|
|
this.instance.helperProportions = inst.helperProportions;
|
|
this.instance.offset.click = inst.offset.click;
|
|
|
|
if(this.instance._intersectsWith(this.instance.containerCache)) {
|
|
|
|
//If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
|
|
if(!this.instance.isOver) {
|
|
|
|
this.instance.isOver = 1;
|
|
//Now we fake the start of dragging for the sortable instance,
|
|
//by cloning the list group item, appending it to the sortable and using it as inst.currentItem
|
|
//We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
|
|
this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
|
|
this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
|
|
this.instance.options.helper = function() { return ui.helper[0]; };
|
|
|
|
event.target = this.instance.currentItem[0];
|
|
this.instance._mouseCapture(event, true);
|
|
this.instance._mouseStart(event, true, true);
|
|
|
|
//Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
|
|
this.instance.offset.click.top = inst.offset.click.top;
|
|
this.instance.offset.click.left = inst.offset.click.left;
|
|
this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
|
|
this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;
|
|
|
|
inst._trigger("toSortable", event);
|
|
inst.dropped = this.instance.element; //draggable revert needs that
|
|
//hack so receive/update callbacks work (mostly)
|
|
inst.currentItem = inst.element;
|
|
this.instance.fromOutside = inst;
|
|
|
|
}
|
|
|
|
//Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
|
|
if(this.instance.currentItem) this.instance._mouseDrag(event);
|
|
|
|
} else {
|
|
|
|
//If it doesn't intersect with the sortable, and it intersected before,
|
|
//we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
|
|
if(this.instance.isOver) {
|
|
|
|
this.instance.isOver = 0;
|
|
this.instance.cancelHelperRemoval = true;
|
|
|
|
//Prevent reverting on this forced stop
|
|
this.instance.options.revert = false;
|
|
|
|
// The out event needs to be triggered independently
|
|
this.instance._trigger('out', event, this.instance._uiHash(this.instance));
|
|
|
|
this.instance._mouseStop(event, true);
|
|
this.instance.options.helper = this.instance.options._helper;
|
|
|
|
//Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
|
|
this.instance.currentItem.remove();
|
|
if(this.instance.placeholder) this.instance.placeholder.remove();
|
|
|
|
inst._trigger("fromSortable", event);
|
|
inst.dropped = false; //draggable revert needs that
|
|
}
|
|
|
|
};
|
|
|
|
});
|
|
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "cursor", {
|
|
start: function(event, ui) {
|
|
var t = $('body'), o = $(this).data('draggable').options;
|
|
if (t.css("cursor")) o._cursor = t.css("cursor");
|
|
t.css("cursor", o.cursor);
|
|
},
|
|
stop: function(event, ui) {
|
|
var o = $(this).data('draggable').options;
|
|
if (o._cursor) $('body').css("cursor", o._cursor);
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "iframeFix", {
|
|
start: function(event, ui) {
|
|
var o = $(this).data('draggable').options;
|
|
$(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() {
|
|
$('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
|
|
.css({
|
|
width: this.offsetWidth+"px", height: this.offsetHeight+"px",
|
|
position: "absolute", opacity: "0.001", zIndex: 1000
|
|
})
|
|
.css($(this).offset())
|
|
.appendTo("body");
|
|
});
|
|
},
|
|
stop: function(event, ui) {
|
|
$("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "opacity", {
|
|
start: function(event, ui) {
|
|
var t = $(ui.helper), o = $(this).data('draggable').options;
|
|
if(t.css("opacity")) o._opacity = t.css("opacity");
|
|
t.css('opacity', o.opacity);
|
|
},
|
|
stop: function(event, ui) {
|
|
var o = $(this).data('draggable').options;
|
|
if(o._opacity) $(ui.helper).css('opacity', o._opacity);
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "scroll", {
|
|
start: function(event, ui) {
|
|
var i = $(this).data("draggable");
|
|
if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset();
|
|
},
|
|
drag: function(event, ui) {
|
|
|
|
var i = $(this).data("draggable"), o = i.options, scrolled = false;
|
|
|
|
if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') {
|
|
|
|
if(!o.axis || o.axis != 'x') {
|
|
if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
|
|
i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
|
|
else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity)
|
|
i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
|
|
}
|
|
|
|
if(!o.axis || o.axis != 'y') {
|
|
if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
|
|
i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
|
|
else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity)
|
|
i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
|
|
}
|
|
|
|
} else {
|
|
|
|
if(!o.axis || o.axis != 'x') {
|
|
if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
|
|
scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
|
|
else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
|
|
scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
|
|
}
|
|
|
|
if(!o.axis || o.axis != 'y') {
|
|
if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
|
|
scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
|
|
else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
|
|
scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
|
|
}
|
|
|
|
}
|
|
|
|
if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
|
|
$.ui.ddmanager.prepareOffsets(i, event);
|
|
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "snap", {
|
|
start: function(event, ui) {
|
|
|
|
var i = $(this).data("draggable"), o = i.options;
|
|
i.snapElements = [];
|
|
|
|
$(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() {
|
|
var $t = $(this); var $o = $t.offset();
|
|
if(this != i.element[0]) i.snapElements.push({
|
|
item: this,
|
|
width: $t.outerWidth(), height: $t.outerHeight(),
|
|
top: $o.top, left: $o.left
|
|
});
|
|
});
|
|
|
|
},
|
|
drag: function(event, ui) {
|
|
|
|
var inst = $(this).data("draggable"), o = inst.options;
|
|
var d = o.snapTolerance;
|
|
|
|
var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
|
|
y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
|
|
|
|
for (var i = inst.snapElements.length - 1; i >= 0; i--){
|
|
|
|
var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
|
|
t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
|
|
|
|
//Yes, I know, this is insane ;)
|
|
if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) {
|
|
if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
|
|
inst.snapElements[i].snapping = false;
|
|
continue;
|
|
}
|
|
|
|
if(o.snapMode != 'inner') {
|
|
var ts = Math.abs(t - y2) <= d;
|
|
var bs = Math.abs(b - y1) <= d;
|
|
var ls = Math.abs(l - x2) <= d;
|
|
var rs = Math.abs(r - x1) <= d;
|
|
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
|
|
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
|
|
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
|
|
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
|
|
}
|
|
|
|
var first = (ts || bs || ls || rs);
|
|
|
|
if(o.snapMode != 'outer') {
|
|
var ts = Math.abs(t - y1) <= d;
|
|
var bs = Math.abs(b - y2) <= d;
|
|
var ls = Math.abs(l - x1) <= d;
|
|
var rs = Math.abs(r - x2) <= d;
|
|
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
|
|
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
|
|
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
|
|
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
|
|
}
|
|
|
|
if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
|
|
(inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
|
|
inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
|
|
|
|
};
|
|
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "stack", {
|
|
start: function(event, ui) {
|
|
|
|
var o = $(this).data("draggable").options;
|
|
|
|
var group = $.makeArray($(o.stack)).sort(function(a,b) {
|
|
return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0);
|
|
});
|
|
if (!group.length) { return; }
|
|
|
|
var min = parseInt(group[0].style.zIndex) || 0;
|
|
$(group).each(function(i) {
|
|
this.style.zIndex = min + i;
|
|
});
|
|
|
|
this[0].style.zIndex = min + group.length;
|
|
|
|
}
|
|
});
|
|
|
|
$.ui.plugin.add("draggable", "zIndex", {
|
|
start: function(event, ui) {
|
|
var t = $(ui.helper), o = $(this).data("draggable").options;
|
|
if(t.css("zIndex")) o._zIndex = t.css("zIndex");
|
|
t.css('zIndex', o.zIndex);
|
|
},
|
|
stop: function(event, ui) {
|
|
var o = $(this).data("draggable").options;
|
|
if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex);
|
|
}
|
|
});
|
|
|
|
})(jQuery);
|