mirror of
https://github.com/EGroupware/egroupware.git
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545 lines
14 KiB
JavaScript
545 lines
14 KiB
JavaScript
/**
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* eGroupWare egw_action framework - egw action framework
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*
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* @link http://www.egroupware.org
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* @author Andreas Stöckel <as@stylite.de>
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* @copyright 2011 by Andreas Stöckel
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package egw_action
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* @version $Id$
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*/
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/*egw:uses
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egw_action;
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egw_action_common;
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egw_action_popup;
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jquery.jquery;
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jquery.jquery-ui;
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*/
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/**
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* Register the drag and drop handlers
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*/
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if (typeof window._egwActionClasses == "undefined")
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window._egwActionClasses = {}
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_egwActionClasses["drag"] = {
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"actionConstructor": egwDragAction,
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"implementation": getDragImplementation
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}
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_egwActionClasses["drop"] = {
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"actionConstructor": egwDropAction,
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"implementation": getDropImplementation
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}
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/**
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* The egwDragAction class overwrites the egwAction class and adds the new
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* "dragType" propery. The "onExecute" event of the drag action will be called
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* whenever dragging starts. The onExecute JS handler should return the
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* drag-drop helper object - otherwise an default helper will be generated.
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*/
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function egwDragAction(_id, _handler, _caption, _icon, _onExecute, _allowOnMultiple)
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{
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var action = new egwAction(_id, _handler, _caption, _icon, _onExecute, _allowOnMultiple);
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action.type = "drag";
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action.dragType = "default";
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action.hideOnDisabled = true;
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action.set_dragType = function(_value) {
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action.dragType = _value;
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}
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return action;
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}
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var
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_dragActionImpl = null;
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function getDragImplementation()
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{
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if (!_dragActionImpl)
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{
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_dragActionImpl = new egwDragActionImplementation();
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}
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return _dragActionImpl
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}
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function egwDragActionImplementation()
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{
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var ai = new egwActionImplementation();
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ai.type = "drag";
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ai.helper = null;
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ai.ddTypes = [];
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ai.selected = [];
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ai.doRegisterAction = function(_aoi, _callback, _context)
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{
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var node = _aoi.getDOMNode();
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if (node)
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{
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// Prevent selection
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node.onselectstart = function () {
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return false;
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};
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if (!(window.FileReader && 'draggable' in document.createElement('span')) )
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{
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// No DnD support
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return;
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}
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// It shouldn't be so hard to get the action...
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var action = null;
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var groups = _context.getActionImplementationGroups();
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if(!groups.drag) return;
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for(var i = 0; i < groups.drag.length; i++)
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{
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// dragType 'file' says it can be dragged as a file
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if(groups.drag[i].link.actionObj.dragType == 'file')
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{
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action = groups.drag[i].link.actionObj;
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break;
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}
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}
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if(action)
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{
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/**
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* We found an action with dragType 'file', so by holding Ctrl
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* key & dragging, user can drag from browser to system.
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* The global data store must provide a full, absolute URL in 'download_url'
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* and a mime in 'mime'.
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*
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* Unfortunately, Native DnD to drag the file conflicts with jQueryUI draggable,
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* which handles all the other DnD actions. We get around this by:
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* 1. Require the user indicate a file drag with Ctrl key
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* 2. Disable jQueryUI draggable, then turn on native draggable attribute
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* This way we can at least toggle which one is operating, so they
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* both work alternately if not together.
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*/
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// Native DnD - Doesn't play nice with jQueryUI Sortable
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// Tell jQuery to include this property
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jQuery.event.props.push('dataTransfer');
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$j(node).off("mousedown")
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.on("mousedown", function(event) {
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$j(node).draggable("option","disabled",event.ctrlKey || event.metaKey);
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$j(this).attr("draggable", event.ctrlKey || event.metaKey ? "true" : "")
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// Disabling draggable adds some UI classes, but we don't care so remove them
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$j(node).removeClass("ui-draggable-disabled ui-state-disabled");
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if(!(event.ctrlKey || event.metaKey) || !this.addEventListener) return;
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})
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.on("dragstart", function(event) {
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if(event.dataTransfer == null) {
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return;
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}
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event.dataTransfer.effectAllowed="copy";
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// Get all selected
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// Multiples aren't supported by event.dataTransfer, yet, so
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// select only the row they clicked on.
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// var selected = _context.getSelectedLinks('drag');
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var selected = [_context];
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_context.parent.setAllSelected(false);
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_context.setSelected(true);
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// Set file data
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for(var i = 0; i < selected.length; i++)
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{
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var data = egw.dataGetUIDdata(selected[i].id);
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if(data && data.data.mime && data.data.download_url)
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{
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var url = data.data.download_url;
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// NEED an absolute URL
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if (url[0] == '/') url = egw.link(url);
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// egw.link adds the webserver, but that might not be an absolute URL - try again
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if (url[0] == '/') url = window.location.origin+url;
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// Unfortunately, dragging files is currently only supported by Chrome
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if(navigator && navigator.userAgent.indexOf('Chrome'))
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{
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event.dataTransfer.setData("DownloadURL", data.data.mime+':'+data.data.name+':'+url);
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}
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else
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{
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// Include URL as a fallback
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event.dataTransfer.setData("text/uri-list", url);
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}
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}
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}
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if(event.dataTransfer.types.length == 0)
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{
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// No file data? Abort: drag does nothing
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event.preventDefault();
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return;
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}
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// Create drag icon
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_callback.call(_context, _context, ai);
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// Drag icon must be visible for setDragImage() - we'll remove it on drag
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$j("body").append(ai.helper);
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event.dataTransfer.setDragImage(ai.helper[0],-12,-12);
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})
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.on("drag", function(e) {
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// Remove the helper, it has been copied into the dataTransfer object now
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// Hopefully user didn't notice it...
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ai.helper.remove();
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});
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}
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$j(node).draggable(
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{
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"distance": 20,
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"cursor": "move",
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"cursorAt": { top: -12, left: -12 },
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"helper": function(e) {
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// The helper function is called before the start function
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// is evoked. Call the given callback function. The callback
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// function will gather the selected elements and action links
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// and call the doExecuteImplementation function. This
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// will call the onExecute function of the first action
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// in order to obtain the helper object (stored in ai.helper)
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// and the multiple dragDropTypes (ai.ddTypes)
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_callback.call(_context, false, ai);
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$j(node).data("ddTypes", ai.ddTypes);
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$j(node).data("selected", ai.selected);
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if (ai.helper)
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{
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// Append the helper object to the body element - this
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// fixes a bug in IE: If the element isn't inserted into
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// the DOM-tree jquery appends it to the parent node.
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// In case this is a table it doesn't work correctly
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$j("body").append(ai.helper);
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return ai.helper;
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}
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// Return an empty div if the helper dom node is not set
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return $j(document.createElement("div"));
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},
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"start": function(e) {
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return ai.helper != null;
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},
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// Solves problem with scroll position changing in the grid
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// component
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"refreshPositions": true,
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"scroll": false,
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"containment": "document",
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"iframeFix": true
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}
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);
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return true;
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}
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return false;
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}
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ai.doUnregisterAction = function(_aoi)
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{
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var node = _aoi.getDOMNode();
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if (node && $j(node).data("uiDraggable")){
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$j(node).draggable("destroy");
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}
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}
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/**
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* Builds the context menu and shows it at the given position/DOM-Node.
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*/
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ai.doExecuteImplementation = function(_context, _selected, _links)
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{
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// Reset the helper object of the action implementation
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this.helper = null;
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var hasLink = false;
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// Store the drag-drop types
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this.ddTypes = [];
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this.selected = _selected;
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// Call the onExecute event of the first actionObject
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for (var k in _links)
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{
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if (_links[k].visible)
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{
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hasLink = true;
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// Only execute the following code if a JS function is registered
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// for the action and this is the first action link
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if (!this.helper && _links[k].actionObj.onExecute.hasHandler())
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{
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this.helper = _links[k].actionObj.execute(_selected);
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}
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// Push the dragType of the associated action object onto the
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// drag type list - this allows an element to support multiple
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// drag/drop types.
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var type = $j.isArray(_links[k].actionObj.dragType) ? _links[k].actionObj.dragType : [_links[k].actionObj.dragType];
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for(var i = 0; i < type.length; i++)
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{
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if (this.ddTypes.indexOf(type[i]) == -1)
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{
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this.ddTypes.push(type[i]);
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}
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}
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}
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}
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// If no helper has been defined, create an default one
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if (!this.helper && hasLink)
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{
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this.helper = $j(document.createElement("div"));
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this.helper.addClass("egw_action_ddHelper");
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this.helper.text("(" + _selected.length + ")");
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}
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return true;
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}
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return ai;
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}
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/**
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* The egwDropAction class overwrites the egwAction class and adds the "acceptedTypes"
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* property. This array should contain all "dragTypes" the drop action is allowed
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* to
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*/
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function egwDropAction(_id, _handler, _caption, _icon, _onExecute, _allowOnMultiple)
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{
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var action = new egwAction(_id, _handler, _caption, _icon, _onExecute, _allowOnMultiple);
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action.type = "drop";
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action.acceptedTypes = ["default"];
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action.canHaveChildren = ["drag","popup"];
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action["default"] = false;
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action.order = 0;
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action.group = 0;
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action.set_default = function(_value) {
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action["default"] = _value;
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}
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action.set_order = function(_value) {
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action.order = _value;
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}
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action.set_group = function(_value) {
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action.group = _value;
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}
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/**
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* The acceptType property allows strings as well as arrays - strings are
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* automatically included in an array.
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*/
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action.set_acceptedTypes = function(_value) {
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if (_value instanceof Array)
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{
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action.acceptedTypes = _value;
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}
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else
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{
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action.acceptedTypes = [_value];
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}
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}
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return action;
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}
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var
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_dropActionImpl = null;
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function getDropImplementation()
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{
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if (!_dropActionImpl)
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{
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_dropActionImpl = new egwDropActionImplementation();
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}
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return _dropActionImpl
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}
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var EGW_AI_DRAG = 0x0100; // Use the first byte as mask for event types - 01 is for events used with drag stuff
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var EGW_AI_DRAG_OUT = EGW_AI_DRAG | 0x01;
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var EGW_AI_DRAG_OVER = EGW_AI_DRAG | 0x02;
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function egwDropActionImplementation()
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{
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var ai = new egwActionImplementation();
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ai.type = "drop";
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ai.doRegisterAction = function(_aoi, _callback, _context)
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{
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var node = _aoi.getDOMNode();
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var self = this;
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if (node)
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{
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$j(node).droppable(
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{
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"accept": function(_draggable) {
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if (typeof _draggable.data("ddTypes") != "undefined")
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{
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var accepted = self._fetchAccepted(
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_callback.call(_context, "links", self, EGW_AO_EXEC_THIS));
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// Check whether all drag types of the selected objects
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// are accepted
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var ddTypes = _draggable.data("ddTypes");
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for (var i = 0; i < ddTypes.length; i++)
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{
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if (accepted.indexOf(ddTypes[i]) != -1)
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{
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return true;
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}
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}
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return false;
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}
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},
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"drop": function(event, ui) {
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var draggable = ui.draggable;
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var ddTypes = draggable.data("ddTypes");
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var selected = draggable.data("selected");
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var links = _callback.call(_context, "links", self, EGW_AO_EXEC_THIS);
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// Disable all links which only accept types which are not
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// inside ddTypes
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for (var k in links)
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{
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var accepted = links[k].actionObj.acceptedTypes;
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var enabled = false
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for (var i = 0; i < ddTypes.length; i++)
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{
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if (accepted.indexOf(ddTypes[i]) != -1)
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{
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enabled = true;
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}
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}
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// Check for allowing multiple selected
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if(!links[k].actionObj.allowOnMultiple && selected.length > 1)
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{
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enabled = false;
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}
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if(!enabled)
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{
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links[k].enabled = false;
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if (links[k].actionObj.hideOnDisabled)
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{
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links[k].visible = true;
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}
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}
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}
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// Check whether there is only one link
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var cnt = 0;
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var lnk = null;
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for (var k in links)
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{
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if (links[k].enabled && links[k].visible)
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{
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lnk = links[k];
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cnt += 1 + links[k].actionObj.children.length;
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// Add ui, so you know what happened where
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lnk.actionObj.ui = ui;
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}
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}
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if (cnt == 1)
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{
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window.setTimeout(function() {
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lnk.actionObj.execute(selected, _context);
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},0);
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}
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if (cnt > 1)
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{
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// More than one drop action link is associated
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// to the drop event - show those as a popup menu
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// and let the user decide which one to use.
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// This is possible as the popup and the popup action
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// object and the drop action object share same
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// set of properties.
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var popup = getPopupImplementation();
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var pos = popup._getPageXY(event.originalEvent);
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window.setTimeout(function() {
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popup.doExecuteImplementation(pos, selected, links,
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_context);
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}, 0); // Timeout is needed to have it working in IE
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}
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_aoi.triggerEvent(EGW_AI_DRAG_OUT);
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},
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"over": function() {
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_aoi.triggerEvent(EGW_AI_DRAG_OVER);
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},
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"out": function() {
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_aoi.triggerEvent(EGW_AI_DRAG_OUT);
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},
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"tolerance": "pointer",
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activeClass: "ui-state-hover",
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hoverClass: "ui-state-active",
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// Greedy is for nested droppables - children consume the action
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greedy: true,
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}
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);
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return true;
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}
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return false;
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}
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ai.doUnregisterAction = function(_aoi)
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{
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var node = _aoi.getDOMNode();
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if (node && $j(node).data("uiDroppable")) {
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$j(node).droppable("destroy");
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}
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}
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ai._fetchAccepted = function(_links)
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{
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// Accumulate the accepted types
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var accepted = [];
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for (var k in _links)
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{
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for (var i = 0; i < _links[k].actionObj.acceptedTypes.length; i++)
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{
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var type = _links[k].actionObj.acceptedTypes[i];
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if (accepted.indexOf(type) == -1)
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{
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accepted.push(type);
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}
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}
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}
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return accepted;
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}
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/**
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* Builds the context menu and shows it at the given position/DOM-Node.
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*/
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ai.doExecuteImplementation = function(_context, _selected, _links)
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{
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if (_context == "links")
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{
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return _links;
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}
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}
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return ai;
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}
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