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R3600/infoscience/var_www_js/jquery-treeview/jquery.treeview.sortable.js
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jquery.treeview.sortable.js
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/*
* jQuery UI Sortable
*
* Copyright (c) 2008 Paul Bakaus
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Sortables
*
* Depends:
* ui.base.js
*
* Revision: $Id: ui.sortable.js 5262 2008-04-17 13:13:51Z paul.bakaus $
*/
;(function($) {
if (window.Node && Node.prototype && !Node.prototype.contains) {
Node.prototype.contains = function (arg) {
return !!(this.compareDocumentPosition(arg) & 16);
};
}
$.widget("ui.sortableTree", $.extend($.ui.mouse, {
init: function() {
//Initialize needed constants
var self = this, o = this.options;
this.containerCache = {};
this.element.addClass("ui-sortableTree");
//Get the items
this.refresh();
//Let's determine the parent's offset
if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
this.offset = this.element.offset();
//Initialize mouse events for interaction
this.mouseInit();
//Prepare cursorAt
if(o.cursorAt && o.cursorAt.constructor == Array)
o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
},
plugins: {},
ui: function(inst) {
return {
helper: (inst || this)["helper"],
position: (inst || this)["position"].current,
absolutePosition: (inst || this)["position"].absolute,
instance: this,
options: this.options,
element: this.element,
item: (inst || this)["currentItem"],
sender: inst ? inst.element : null
};
},
propagate: function(n,e,inst) {
$.ui.plugin.call(this, n, [e, this.ui(inst)]);
this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
},
serialize: function(o) {
var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
var str = []; o = o || {};
items.each(function() {
var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
});
return str.join('&');
},
toArray: function(attr) {
var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
var ret = [];
items.each(function() { ret.push($(this).attr(attr || 'id')); });
return ret;
},
enable: function() {
this.element.removeClass("ui-sortableTree-disabled");
this.options.disabled = false;
},
disable: function() {
this.element.addClass("ui-sortableTree-disabled");
this.options.disabled = true;
},
/* Be careful with the following core functions */
intersectsWith: function(item) {
var x1 = this.position.absolute.left - 10, x2 = x1 + 10,
y1 = this.position.absolute.top - 10, y2 = y1 + 10;
var l = item.left, r = l + item.width,
t = item.top, b = t + item.height;
return ( l < x1 + (this.helperProportions.width / 2) // Right Half
&& x2 - (this.helperProportions.width / 2) < r // Left Half
&& t < y1 + (this.helperProportions.height / 2) // Bottom Half
&& y2 - (this.helperProportions.height / 2) < b ); // Top Half
},
intersectsWithEdge: function(item) {
var y1 = this.position.absolute.top - 10, y2 = y1 + 10;
var t = item.top, b = t + item.height;
if(!this.intersectsWith(item.item.parents(".ui-sortableTree").data("sortableTree").containerCache)) return false;
if (!( t < y1 + (this.helperProportions.height / 2) // Bottom Half
&& y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
if(y2 > t && y1 < t) return 1; //Crosses top edge
if(y1 < b && y2 > b) return 2; //Crosses bottom edge
return false;
},
refresh: function() {
this.refreshItems();
this.refreshPositions();
},
refreshItems: function() {
this.items = [];
this.containers = [this];
var items = this.items;
var queries = [$(this.options.items, this.element)];
if(this.options.connectWith) {
for (var i = this.options.connectWith.length - 1; i >= 0; i--){
var cur = $(this.options.connectWith[i]);
for (var j = cur.length - 1; j >= 0; j--){
var inst = $.data(cur[j], 'sortableTree');
if(inst && !inst.options.disabled) {
queries.push($(inst.options.items, inst.element));
this.containers.push(inst);
}
};
};
}
for (var i = queries.length - 1; i >= 0; i--){
queries[i].each(function() {
$.data(this, 'sortableTree-item', true); // Data for target checking (mouse manager)
items.push({
item: $(this),
width: 0, height: 0,
left: 0, top: 0
});
});
};
},
refreshPositions: function(fast) {
for (var i = this.items.length - 1; i >= 0; i--){
if(!fast) this.items[i].height = this.items[i].item.outerHeight();
this.items[i].top = this.items[i].item.offset().top;
};
for (var i = this.containers.length - 1; i >= 0; i--){
var p =this.containers[i].element.offset();
this.containers[i].containerCache.left = p.left;
this.containers[i].containerCache.top = p.top;
this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
};
},
destroy: function() {
this.element
.removeClass("ui-sortableTree ui-sortableTree-disabled")
.removeData("sortableTree")
.unbind(".sortableTree");
this.mouseDestroy();
for ( var i = this.items.length - 1; i >= 0; i-- )
this.items[i].item.removeData("sortableTree-item");
},
contactContainers: function(e) {
for (var i = this.containers.length - 1; i >= 0; i--){
if(this.intersectsWith(this.containers[i].containerCache)) {
if(!this.containers[i].containerCache.over) {
if(this.currentContainer != this.containers[i]) {
//When entering a new container, we will find the item with the least distance and append our item near it
var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute.top;
for (var j = this.items.length - 1; j >= 0; j--) {
if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
var cur = this.items[j].top;
if(Math.abs(cur - base) < dist) {
dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
}
}
itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
this.propagate("change", e); //Call plugins and callbacks
this.containers[i].propagate("change", e, this); //Call plugins and callbacks
this.currentContainer = this.containers[i];
}
this.containers[i].propagate("over", e, this);
this.containers[i].containerCache.over = 1;
}
} else {
if(this.containers[i].containerCache.over) {
this.containers[i].propagate("out", e, this);
this.containers[i].containerCache.over = 0;
}
}
};
},
mouseStart: function(e,el) {
if(this.options.disabled || this.options.type == 'static') return false;
//Find out if the clicked node (or one of its parents) is a actual item in this.items
var currentItem = null, nodes = $(e.target).parents().each(function() {
if($.data(this, 'sortableTree-item')) {
currentItem = $(this);
return false;
}
});
if($.data(e.target, 'sortableTree-item')) currentItem = $(e.target);
if(!currentItem) return false;
if(this.options.handle) {
var validHandle = false;
$(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
if(!validHandle) return false;
}
this.currentItem = currentItem;
var o = this.options;
this.currentContainer = this;
this.refresh();
//Create and append the visible helper
this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
if(!this.helper.parents('body').length) this.helper.appendTo("body"); //Add the helper to the DOM if that didn't happen already
this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortableTree-helper'); //Position it absolutely and add a helper class
//Prepare variables for position generation
$.extend(this, {
offsetParent: this.helper.offsetParent(),
offsets: { absolute: this.currentItem.offset() }
});
//Save the first time position
$.extend(this, {
position: {
current: { left: e.pageX, top: e.pageY },
absolute: { left: e.pageX, top: e.pageY },
dom: this.currentItem.prev()[0]
},
clickOffset: { left: -5, top: -5 }
});
this.propagate("start", e); //Call plugins and callbacks
this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
for (var i = this.containers.length - 1; i >= 0; i--) {
this.containers[i].propagate("activate", e, this);
} //Post 'activate' events to possible containers
//Prepare possible droppables
if($.ui.ddmanager) $.ui.ddmanager.current = this;
if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
this.dragging = true;
return true;
},
mouseStop: function(e) {
if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt); //remove sort indicator
this.propagate("stop", e); //Call plugins and trigger callbacks
//If we are using droppables, inform the manager about the drop
var dropped = ($.ui.ddmanager && !this.options.dropBehaviour) ? $.ui.ddmanager.drop(this, e) : false;
if(!dropped && this.newPositionAt) this.newPositionAt[this.direction == 'down' ? 'before' : 'after'](this.currentItem); //Append to element to its new position
if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
this.propagate("remove", e);
for (var i = this.containers.length - 1; i >= 0; i--){
if(this.containers[i].element[0].contains(this.currentItem[0])) {
this.containers[i].propagate("update", e, this);
this.containers[i].propagate("receive", e, this);
}
};
};
//Post events to containers
for (var i = this.containers.length - 1; i >= 0; i--){
this.containers[i].propagate("deactivate", e, this);
if(this.containers[i].containerCache.over) {
this.containers[i].propagate("out", e, this);
this.containers[i].containerCache.over = 0;
}
}
this.dragging = false;
if(this.cancelHelperRemoval) return false;
this.helper.remove();
return false;
},
mouseDrag: function(e) {
//Compute the helpers position
this.position.current = { top: e.pageY + 5, left: e.pageX + 5 };
this.position.absolute = { left: e.pageX + 5, top: e.pageY + 5 };
//Interconnect with droppables
if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
var intersectsWithDroppable = false;
$.each($.ui.ddmanager.droppables, function() {
if(this.isover) intersectsWithDroppable = true;
});
//Rearrange
if(intersectsWithDroppable) {
if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
} else {
for (var i = this.items.length - 1; i >= 0; i--) {
if(this.currentItem[0].contains(this.items[i].item[0])) continue;
var intersection = this.intersectsWithEdge(this.items[i]);
if(!intersection) continue;
this.direction = intersection == 1 ? "down" : "up";
this.rearrange(e, this.items[i]);
this.propagate("change", e); //Call plugins and callbacks
break;
}
}
//Post events to containers
this.contactContainers(e);
this.propagate("sort", e); //Call plugins and callbacks
this.helper.css({ left: this.position.current.left+'px', top: this.position.current.top+'px' }); // Stick the helper to the cursor
return false;
},
rearrange: function(e, i, a) {
if(i) {
if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
this.newPositionAt = i.item;
this.options.sortIndication[this.direction].call(this.currentItem, this.newPositionAt);
} else {
//Append
}
}
}));
$.extend($.ui.sortableTree, {
defaults: {
items: '> *',
zIndex: 1000,
distance: 1
},
getter: "serialize toArray"
});
})(jQuery);
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