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123 lines
2.8 KiB
JavaScript
123 lines
2.8 KiB
JavaScript
/*
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* jQuery UI Droppable @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/Droppables
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.widget.js
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* jquery.ui.draggable.js
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*/
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(function( $, undefined ) {
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$.widget("ui.droppable", {
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version: "@VERSION",
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widgetEventPrefix: "drop",
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allowedTolerance: ['touch'],
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options: {
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// accept: '*',
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// activeClass: false,
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// addClasses: true,
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// greedy: false,
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// hoverClass: false,
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// scope: 'default',
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tolerance: 'touch' //'intersect'
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},
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// draggableProportions: width and height of currently dragging draggable
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// over: whether or not a draggable is currently over droppable
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// proportions: width and height of droppable
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_create: function() {
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// Store current location
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this.offset = this.element.offset();
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//Store the droppable's proportions
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this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight };
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// TODO: Use $.Callbacks or .on from 1.7
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$('*').live( "drag", $.proxy( this._drag, this ) );
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$('*').live( "dragstart", $.proxy( this._dragStart, this ) );
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this._bind( this.document, {
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mouseup: "_mouseUp"
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});
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},
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_drag: function( event, ui ) {
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var rightEdge, bottomEdge, draggableRightEdge, draggableBottomEdge, xOverlap, yOverlap;
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switch ( this.options.tolerance ) {
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case 'touch':
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rightEdge = ( this.offset.left + this.proportions.width ),
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bottomEdge = ( this.offset.top + this.proportions.height ),
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draggableRightEdge = ( ui.offset.left + this.draggableProportions.width ),
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draggableBottomEdge = ( ui.offset.top + this.draggableProportions.height ),
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xOverlap = ( draggableRightEdge >= this.offset.left && ui.offset.left <= rightEdge ),
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yOverlap = ( draggableBottomEdge >= this.offset.top && ui.offset.top <= bottomEdge );
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if ( xOverlap && yOverlap ) {
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this._trigger( "over", event, this._uiHash() );
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this.over = true;
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}
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else if ( this.over ) {
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this.over = false;
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this._trigger( "out", event, this._uiHash() );
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}
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break;
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default:
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throw( "Invalid tolerance passed: " + this.options.tolerance + ". Allowed: " + this.allowedTolerance.join( ', ' ) );
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break;
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}
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},
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_dragStart: function( event, ui ) {
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var draggable = $( event.target );
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// TODO: Possibly move into draggable hash, so if there are multiple droppables, it's not recalculating all the time
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this.draggableProportions = { width: draggable[0].offsetWidth, height: draggable[0].offsetHeight };
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},
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_mouseUp: function( event ) {
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if ( this.over ) {
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this._trigger( "drop", event, this._uiHash() );
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}
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this.over = false;
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},
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// TODO: fill me out
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_uiHash: function() {
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return {};
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}
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});
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})(jQuery);
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