forked from extern/egroupware
1042 lines
23 KiB
JavaScript
1042 lines
23 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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/*
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uses
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egw_action,
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egw_action_common,
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egw_grid_columns;
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*/
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/** -- egwGridDataElement Class -- **/
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var EGW_DATA_TYPE_RANGE = 0;
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var EGW_DATA_TYPE_ELEMENT = 1;
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/**
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* Contains the data (model) objects which retrieve data from the given source and
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* pass it to.
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*
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* @param object _parent the parent data element in which the new element is contained
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* @param object _columns the columns object which contains information about the data columns
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* @param object _readQueue is the queue object which queues data-fetching calls and executes these
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* asynchronously.
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* @param object _objectManager if this element is the root element (_parent is null),
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* specify the _objectManager in order to supply a parent object manager for that
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* element.
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*/
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function egwGridDataElement(_id, _parent, _columns, _readQueue, _objectManager)
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{
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// Copy the passed arguments
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this.id = _id;
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this.parent = _parent;
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this.columns = _columns;
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this.readQueue = _readQueue;
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// Generate the action object associated to this element
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this.parentActionObject = _parent ? _parent.actionObject : _objectManager;
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this.actionObject = null;
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// If this is the root object, add the an root action object to the objectManager
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if (!_parent)
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{
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this.actionObject = this.parentActionObject.addObject(_id, null,
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EGW_AO_FLAG_IS_CONTAINER);
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this.readQueue.setDataRoot(this);
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}
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// Preset some parameters
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this.children = [];
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this.data = {};
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this.caption = false;
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this.iconUrl = false;
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this.iconSize = false;
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this.opened = _parent == null;
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this.index = 0;
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this.canHaveChildren = false;
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this.type = egwGridViewRow;
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this.userData = null;
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this.updatedGrid = null;
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this.actionLinkGroups = {};
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this.group = false;
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this.gridViewObj = null;
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}
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egwGridDataElement.prototype.free = function()
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{
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//TODO
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}
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egwGridDataElement.prototype.set_caption = function(_value)
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{
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this.caption = _value;
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}
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egwGridDataElement.prototype.set_iconUrl = function(_value)
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{
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this.iconUrl = _value;
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}
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egwGridDataElement.prototype.set_iconSize = function(_value)
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{
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this.iconSize = _value;
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}
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egwGridDataElement.prototype.set_opened = function(_value)
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{
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this.opened = _value;
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}
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egwGridDataElement.prototype.set_canHaveChildren = function(_value)
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{
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this.canHaveChildren = _value && (this.children.length == 0);
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}
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egwGridDataElement.prototype.set_group = function(_value)
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{
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this.group = _value;
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var root = this.getRootElement();
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if (typeof root.actionLinkGroups[_value] != "undefined")
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{
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this.actionObject.updateActionLinks(root.actionLinkGroups[_value]);
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}
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}
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/**
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* Updates the column data. The column data is an object (used as associative array)
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* which may be of the following outline:
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*
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* {
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* "[col1_id]": "[data]",
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* "[col2_id]":
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* {
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* "data": "[data]",
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* "sortData": "[sortData]"
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* }
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* }
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*
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* "sortData" is data which is used for sorting instead of "data" when set.
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*/
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egwGridDataElement.prototype.set_data = function(_value)
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{
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if (typeof _value == "object" && _value.constructor == Object)
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{
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// Update the column data specified in the value
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for (col_id in _value)
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{
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var val = _value[col_id];
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var data = "";
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var sortData = null;
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if (typeof val == "object")
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{
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data = typeof val.data != "undefined" ? val.data : "";
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sortData = typeof val.sortData != "undefined" ? val.sortData : null;
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}
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else
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{
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data = val;
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}
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this.data[col_id] = {
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"data": data,
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"sortData": sortData,
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"queued": false
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}
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}
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}
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}
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/**
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* Loads data into the GridData element. This function has two basic operating modes:
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*
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* 1. If an array of objects is passed, the specified objects are added as children.
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* If a child node with the given ID already exists, it is updated.
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* The given data array must have the following form:
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* [
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* {
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* ["entryType": (EGW_DATA_TYPE_ELEMENT | EGW_DATA_TYPE_RANGE)] // Defaults to EGW_DATA_TYPE_ELEMENT
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* "type": "[Typeclass]" // Typeclass of the view-container: specifies the chars after the egwGridView-prefix. Defaults to "Row" which becomes "egwGridViewRow"
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* IF EGW_DATA_TYPE_ELEMENT:
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* "children": [ Objects which will be added to the children of the element ]
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* ELEMENT DATA // See below
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IF EGW_DATA_TYPE_RANGE:
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"count": [Count of Elements],
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"prefix": "[String prefix which will be added to each element including their index in the list]"
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* }
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* ]
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*
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* 2. If an object with element dara is passed, the properties of the element will
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* be updated to the given values.
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*
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* {
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* "data": { COLUMN DATA OBJECT } // See "set_data" function
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* "caption": "[Caption]" // Used in the EGW_COL_TYPE_NAME_ICON_FIXED column
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* "iconUrl": "[IconUrl]" // Used in the EGW_COL_TYPE_NAME_ICON_FIXED column
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* "opened": [true|false] // Specifies whether the row is "opened" or "closed" (in trees)
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* "canHaveChildren": [true|false] // Specifies whether the row "open/close" button is displayed
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* }
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*/
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egwGridDataElement.prototype.loadData = function(_data, _doCallUpdate)
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{
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if (typeof _doCallUpdate == "undefined")
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{
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_doCallUpdate = false;
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}
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if (_data.constructor == Array)
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{
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var virgin = this.children.length == 0;
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var last_element = null;
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for (var i = 0; i < _data.length; i++)
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{
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var entry = _data[i];
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if (entry.constructor != Object)
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{
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continue;
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}
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var element = null;
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// Read the entry type and the element type (if they are set)
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var entryType = typeof entry.entryType == "number" ? entry.entryType :
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EGW_DATA_TYPE_ELEMENT;
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var type = (typeof entry.type == "string") && (typeof window["egwGridView" + entry.type] == "function") ?
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window["egwGridView" + entry.type] : egwGridViewRow;
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// Inserts a range of given dummy elements into the data tree
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if (entryType == EGW_DATA_TYPE_RANGE)
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{
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var count = typeof entry.count == "number" && entry.count >= 0 ? entry.count : 1;
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var prefix = typeof entry.prefix == "string" ? entry.prefix : "elem_";
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var canHaveChildren = typeof entry.canHaveChildren == "boolean" ? entry.canHaveChildren : false;
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var index = last_element ? last_element.index + 1 : 0;
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for (var j = 0; j < count; j++)
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{
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var id = prefix + (index + j);
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element = this.insertElement(index + j, id);
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element.type = type; // Type can only be set directly after creation
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element.canHaveChildren = canHaveChildren;
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}
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}
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else if (entryType == EGW_DATA_TYPE_ELEMENT)
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{
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var id = typeof entry.id == "string" ? entry.id : "";
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element = null;
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if (!virgin && id)
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{
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element = this.getElementById(id, 1);
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}
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if (!element)
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{
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element = this.insertElement(false, id);
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element.type = type; // Type can only be set directly after creation
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}
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element.loadData(entry);
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}
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last_element = element;
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}
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}
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else
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{
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// Load all the data element for which a setter function exists
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egwActionStoreJSON(_data, this, true);
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// Load the child data
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if (typeof _data.children != "undefined" && _data.children.constructor == Array)
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{
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this.loadData(_data.children);
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}
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if (_doCallUpdate)
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{
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this.callBeginUpdate();
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}
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this.callGridViewObjectUpdate();
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}
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}
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/**
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* Resets all relevant data (the column data, icon and icon size) of the element
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* and triggers a gridViewObj update.
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*/
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egwGridDataElement.prototype.clearData = function()
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{
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this.data = {};
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this.caption = false;
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this.iconUrl = false;
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this.iconSize = false;
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this.callGridViewObjectUpdate();
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}
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/**
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* Inserts a new element as child at the given position
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*
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* @param integer _index is the index at which the element will be inserted. If
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* false, the element will be added to the end of the list.
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* @param string _id is the id of the newly created element
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* @returns the newly created element
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*/
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egwGridDataElement.prototype.insertElement = function(_index, _id)
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{
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if (!_index)
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{
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_index = this.children.length;
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}
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else
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{
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_index = Math.max(0, Math.min(this.children.length, _index));
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}
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// Create the data element
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var element = new egwGridDataElement(_id, this, this.columns, this.readQueue,
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null);
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element.index = _index;
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// Create the action object
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var object = this.actionObject.insertObject(_index, _id, null, 0);
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object.data = element;
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// Link the two together
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element.actionObject = object;
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// As this element now at least has one child, "canHaveChildren" must be true
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this.canHaveChildren = true;
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// Insert the element at the given index
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this.children.splice(_index, 0, element);
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// Increment the index of all following elements
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for (var i = _index + 1; i < this.children.length; i++)
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{
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this.children[i].index++;
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}
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return element;
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}
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/**
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* Adds a new data element as child to the end of the list.
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*
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* @param string _id is the object identifier
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* @returns the newly created element
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*/
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egwGridDataElement.prototype.addElement = function(_id)
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{
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return this.insertElement(false, _id);
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}
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egwGridDataElement.prototype.removeElement = function()
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{
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//TODO
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}
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/**
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* Searches for the element with the given id and returns it. _depth specifies
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* the maximum recursion depth. May be omited.
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*/
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egwGridDataElement.prototype.getElementById = function(_id, _depth)
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{
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if (typeof _depth == "undefined")
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{
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_depth = -1;
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}
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// Check whether this element is the searched one, if yes return it
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if (_id == this.id)
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{
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return this;
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}
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// Only continue searching in deeper levels, if the given depth is greater than
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// zero, or hasn't been defined and is therefore smaller than zero
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if (_depth < 0 || _depth > 0)
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{
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for (var i = 0; i < this.children.length; i++)
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{
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var elem = this.children[i].getElementById(_id, _depth - 1);
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if (elem)
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{
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return elem;
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}
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}
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}
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return null;
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}
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/**
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* Returns all children as array - this list will be used to set the item list
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* of the egwGridViewSpacer containers.
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*/
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egwGridDataElement.prototype.getChildren = function(_callback, _context)
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{
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if (this.children.length > 0)
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{
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_callback.call(_context, this.children, true);
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}
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else if (this.canHaveChildren)
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{
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// If the children havn't been loaded yet, request them via queue call.
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this.readQueue.queueCall(this, EGW_DATA_QUEUE_CHILDREN, function() {
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_callback.call(_context, this.children, false);
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}, this);
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}
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}
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egwGridDataElement.prototype.hasColumn = function(_columnId, _returnData)
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{
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// Get the column
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var col = this.columns.getColumnById(_columnId);
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var res = null;
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if (col)
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{
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res = false;
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// Check whether the queried column is the "EGW_COL_TYPE_NAME_ICON_FIXED" column
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if (col.type == EGW_COL_TYPE_NAME_ICON_FIXED)
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{
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if (this.caption !== false)
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{
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if (_returnData)
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{
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res = {
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"caption": this.caption,
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"iconUrl": this.iconUrl
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}
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}
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else
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{
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res = true;
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}
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}
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if (!_returnData && typeof (this.data[_columnId]) != "undefined" && this.data[_columnId].queued)
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{
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res = true;
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}
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}
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else
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{
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// Check whether the column data of this column has been read,
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// if yes, return it.
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if (typeof this.data[_columnId] != "undefined")
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{
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if (_returnData && typeof this.data[_columnId].data != "undefined")
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{
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res = this.data[_columnId].data;
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}
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else
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{
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res = true;
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}
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}
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// Probably there is a default value specified for this column...
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else if (col["default"] !== EGW_COL_DEFAULT_FETCH)
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{
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if (_returnData)
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{
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res = col["default"];
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}
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else
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{
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res = true;
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}
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}
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}
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}
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return res;
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}
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/**
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* Returns the data for the given columns or incomplete data if those columns
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* are not available now. Those columns are loaded asynchronously in the background
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* and the GridViewObject is informed about this as soon as the new data has been
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* loaded.
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*
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* @param _columnIds is an array of column ids for which the data should be returned
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*/
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egwGridDataElement.prototype.getData = function(_columnIds)
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{
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var queryList = [];
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var result = {};
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for (var i = 0; i < _columnIds.length; i++)
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{
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var res = this.hasColumn(_columnIds[i], true);
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// Either add the result to the result list (if the column data was available)
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// or add it to the query list.
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if (res !== null)
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{
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if (res !== false)
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{
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result[_columnIds[i]] = res;
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}
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else
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{
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queryList.push(_columnIds[i]);
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}
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}
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}
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// If one data entry hasn't been available, queue the request for this data
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// in the readQueue
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if (queryList.length > 0)
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{
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this.readQueue.queueCall(this, queryList);
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}
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return result;
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}
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|
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/**
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* Calls the row object update function - checks whether the row object implements
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* this interface and whether it is set.
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*/
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egwGridDataElement.prototype.callGridViewObjectUpdate = function(_immediate)
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{
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if (typeof _immediate == "undefined")
|
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{
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_immediate = false;
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}
|
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|
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if (this.gridViewObj && typeof this.gridViewObj.doUpdateData == "function")
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{
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this.gridViewObj.doUpdateData(_immediate);
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}
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}
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|
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egwGridDataElement.prototype.getDeepestOpened = function()
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{
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if (this.opened && this.children.length > 0)
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{
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return this.children[this.children.length - 1].getDeepestOpened();
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}
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else
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{
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return this;
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}
|
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}
|
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|
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/**
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* Returns whether this data element is a odd or even one
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*/
|
|
egwGridDataElement.prototype.isOdd = function()
|
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{
|
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return (this.index % 2) == 0; // Improve - old exact version needed way too much performance
|
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}
|
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|
|
/**
|
|
* Function which is called by the grid view container in order to update the
|
|
* action object aoi.
|
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*/
|
|
egwGridDataElement.prototype.setGridViewObj = function(_obj)
|
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{
|
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this.gridViewObj = _obj;
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|
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if (_obj && typeof _obj.getAOI == "function")
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{
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var aoi = _obj.getAOI();
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this.actionObject.setAOI(aoi);
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aoi.reconnectActions();
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}
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else
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{
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this.actionObject.setAOI(null);
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}
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}
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|
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/**
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* Returns the root element
|
|
*/
|
|
egwGridDataElement.prototype.getRootElement = function()
|
|
{
|
|
if (!this.parent)
|
|
{
|
|
return this;
|
|
}
|
|
else
|
|
{
|
|
return this.parent.getRootElement();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the depth of this element in the document tree
|
|
*/
|
|
egwGridDataElement.prototype.getDepth = function()
|
|
{
|
|
return (this.parent) ? (this.parent.getDepth() + 1) : 0;
|
|
}
|
|
|
|
/**
|
|
* Calls the beginUpdate function of the grid associated to the grid view object
|
|
*/
|
|
egwGridDataElement.prototype.callBeginUpdate = function()
|
|
{
|
|
if (this.gridViewObj)
|
|
{
|
|
var root = this.getRootElement();
|
|
|
|
if (root.updatedGrid != this.gridViewObj.grid)
|
|
{
|
|
if (root.updatedGrid)
|
|
{
|
|
root.updatedGrid.endUpdate();
|
|
}
|
|
root.updatedGrid = this.gridViewObj.grid;
|
|
root.updatedGrid.beginUpdate();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calls the end update function of the currently active updated grid
|
|
*/
|
|
egwGridDataElement.prototype.callEndUpdate = function()
|
|
{
|
|
var root = this.getRootElement();
|
|
|
|
if (root.updatedGrid)
|
|
{
|
|
root.updatedGrid.endUpdate();
|
|
root.updatedGrid = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Deletes all child elements
|
|
*/
|
|
egwGridDataElement.prototype.empty = function()
|
|
{
|
|
this.children = [];
|
|
// this.readQueue.empty();
|
|
}
|
|
|
|
/**
|
|
* Returns all parents in a list
|
|
*/
|
|
egwGridDataElement.prototype.getParentList = function(_lst)
|
|
{
|
|
if (typeof _lst == "undefined")
|
|
{
|
|
_lst = [];
|
|
}
|
|
|
|
_lst.push(this);
|
|
|
|
if (this.parent)
|
|
{
|
|
this.parent.getParentList(_lst);
|
|
}
|
|
|
|
return _lst;
|
|
}
|
|
|
|
|
|
function egwGridData_getOutermostParent(_elements)
|
|
{
|
|
var minElem = null;
|
|
var minCnt = 0;
|
|
|
|
for (var i = 0; i < _elements.length; i++)
|
|
{
|
|
var parents = _elements[i].getParentList();
|
|
|
|
if (i == 0 || parents.length < minCnt)
|
|
{
|
|
minCnt = parents.length;
|
|
minElem = _elements[i];
|
|
}
|
|
}
|
|
|
|
return minElem ? (minElem.parent ? minElem.parent : minElem) : null;
|
|
}
|
|
|
|
/** - egwGridDataReadQueue -- **/
|
|
|
|
// Some internally used constants
|
|
var EGW_DATA_QUEUE_ELEM = 0;
|
|
var EGW_DATA_QUEUE_CHILDREN = 1;
|
|
|
|
// Count of elements which are dynamically added to the update list.
|
|
var EGW_DATA_QUEUE_PREFETCH_COUNT = 50;
|
|
|
|
// Timeout after which the queue events are no longer queued but the actual
|
|
// callback function is called.
|
|
var EGW_DATA_QUEUE_FLUSH_TIMEOUT = 200;
|
|
|
|
// Maximum count of elements in the queue after which the queue is flushed
|
|
var EGW_DATA_QUEUE_MAX_ELEM_COUNT = 100;
|
|
|
|
function egwGridDataQueue(_fetchCallback, _context)
|
|
{
|
|
this.fetchCallback = _fetchCallback;
|
|
this.context = _context;
|
|
this.dataRoot = null;
|
|
|
|
this.queue = [];
|
|
this.queueColumns = [];
|
|
this.timeoutId = 0;
|
|
}
|
|
|
|
egwGridDataQueue.prototype.setDataRoot = function(_dataRoot)
|
|
{
|
|
this.dataRoot = _dataRoot;
|
|
}
|
|
|
|
/**
|
|
* Adds an element to the queue and checks whether its element count is larger
|
|
* than the one specified in EGW_DATA_QUEUE_MAX_ELEM_COUNT. If this is the case,
|
|
* the queue is flushed and false is returned, otherwise true.
|
|
*/
|
|
egwGridDataQueue.prototype._queue = function(_obj)
|
|
{
|
|
this.timeoutId++;
|
|
|
|
// Push the queue object onto the queue
|
|
this.queue.push(_obj);
|
|
|
|
if (this.queue.length > EGW_DATA_QUEUE_MAX_ELEM_COUNT)
|
|
{
|
|
this.flushQueue(false);
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
// Specify that the element data is queued
|
|
if (_obj.type != EGW_DATA_QUEUE_CHILDREN)
|
|
{
|
|
for (var i = 0; i < this.queueColumns.length; i++)
|
|
{
|
|
if (typeof _obj.elem.data[this.queueColumns[i]] == "undefined")
|
|
{
|
|
_obj.elem.data[this.queueColumns[i]] = {
|
|
"queued": true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Set the flush queue timeout
|
|
var tid = this.timeoutId;
|
|
var self = this;
|
|
window.setTimeout(function() {
|
|
if (self.timeoutId == tid)
|
|
{
|
|
self.flushQueue(true);
|
|
}
|
|
}, EGW_DATA_QUEUE_FLUSH_TIMEOUT);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
egwGridDataQueue.prototype._accumulateQueueColumns = function(_columns)
|
|
{
|
|
if (this.dataRoot.columns.columns.length > this.queueColumns.length)
|
|
{
|
|
// Merge the specified columns into the queueColumns variable
|
|
for (var i = 0; i < _columns.length; i++)
|
|
{
|
|
if (this.queueColumns.indexOf(_columns[i]) == -1)
|
|
{
|
|
this.queueColumns.push(_columns[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Queues the given element in the fetch-data queue.
|
|
*
|
|
* @param object _elem is the element whose data will be fetched
|
|
* @param array _columns is an array of column ids which should be fetched. Those
|
|
* columns will be accumulated over the queue calls. _columns may also take
|
|
* the value EGW_DATA_QUEUE_CHILDREN in which case a request for the children
|
|
* of the given element is queued.
|
|
* @param function _callback is a callback function which will be called after
|
|
* the data has been sent from the server.
|
|
* @param object _context is the context in which the callback function will
|
|
* be executed.
|
|
*/
|
|
egwGridDataQueue.prototype.queueCall = function(_elem, _columns, _callback, _context)
|
|
{
|
|
if (typeof _callback == "undefined")
|
|
{
|
|
_callback = null;
|
|
}
|
|
if (typeof _context == "undefined")
|
|
{
|
|
_context = null;
|
|
}
|
|
|
|
if (_columns === EGW_DATA_QUEUE_CHILDREN)
|
|
{
|
|
this._queue({
|
|
"elem": _elem,
|
|
"type": EGW_DATA_QUEUE_CHILDREN,
|
|
"callback": _callback,
|
|
"context": _context
|
|
});
|
|
}
|
|
else
|
|
{
|
|
// Accumulate the queue columns ids
|
|
this._accumulateQueueColumns(_columns);
|
|
|
|
// Queue the element and search in the elements around the given one for
|
|
// elements whose data isn't loaded yet.
|
|
this._queue({
|
|
"elem": _elem,
|
|
"type": EGW_DATA_QUEUE_ELEM,
|
|
"callback": _callback,
|
|
"context": _context
|
|
});
|
|
}
|
|
}
|
|
|
|
egwGridDataQueue.prototype._getQueuePlanes = function()
|
|
{
|
|
var planes = [];
|
|
var curPlane = null;
|
|
|
|
for (var i = 0; i < this.queue.length; i++)
|
|
{
|
|
var elem = this.queue[i].elem;
|
|
|
|
if (!curPlane || elem.parent != curPlane.parent)
|
|
{
|
|
curPlane = null;
|
|
for (var j = 0; j < planes.length; j++)
|
|
{
|
|
if (planes[j].parent == elem.parent)
|
|
{
|
|
curPlane = planes[j];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!curPlane)
|
|
{
|
|
curPlane = {
|
|
"parent": elem.parent,
|
|
"cnt": 0,
|
|
"min": 0,
|
|
"max": 0,
|
|
"idx": 0,
|
|
"done": false
|
|
};
|
|
planes.push(curPlane);
|
|
}
|
|
}
|
|
|
|
if (curPlane.cnt == 0 || elem.index < curPlane.min)
|
|
{
|
|
curPlane.min = elem.index;
|
|
}
|
|
if (curPlane.cnt == 0 || elem.index > curPlane.max)
|
|
{
|
|
curPlane.max = elem.index;
|
|
}
|
|
|
|
curPlane.cnt++;
|
|
}
|
|
|
|
return planes;
|
|
}
|
|
|
|
egwGridDataQueue.prototype.prefetch = function(_cnt)
|
|
{
|
|
var cnt = _cnt;
|
|
var planes = this._getQueuePlanes();
|
|
|
|
// Set the start indices
|
|
for (var i = 0; i < planes.length; i++)
|
|
{
|
|
planes[i].idx = Math.max(0, Math.ceil(planes[i].min - _cnt / (2 * planes.length)));
|
|
}
|
|
|
|
// Add as many elements as specified to the prefetched elements
|
|
var done = 0;
|
|
var plane = 0;
|
|
while (cnt > 0 && done < planes.length)
|
|
{
|
|
if (!planes[plane].done)
|
|
{
|
|
var idx = planes[plane].idx;
|
|
|
|
if (!planes[plane].parent || idx == planes[plane].parent.children.length)
|
|
{
|
|
planes[plane].done = true;
|
|
done++;
|
|
}
|
|
else
|
|
{
|
|
var hasData = true;
|
|
var elem = planes[plane].parent.children[idx];
|
|
for (var j = 0; j < this.queueColumns.length; j++)
|
|
{
|
|
if (!elem.hasColumn(this.queueColumns[j], false))
|
|
{
|
|
hasData = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!hasData)
|
|
{
|
|
this._queue({
|
|
"elem": elem,
|
|
"type": EGW_DATA_QUEUE_ELEM,
|
|
"callback": null,
|
|
"context": null
|
|
});
|
|
cnt--;
|
|
}
|
|
|
|
planes[plane].idx++;
|
|
}
|
|
}
|
|
|
|
// Go to the next plane
|
|
plane = (plane + 1) % planes.length;
|
|
}
|
|
}
|
|
|
|
egwGridDataQueue.prototype.empty = function()
|
|
{
|
|
this.queue = [];
|
|
}
|
|
|
|
/**
|
|
* Empties the queue and calls the fetch callback which cares about retrieving
|
|
* the data from the server.
|
|
*/
|
|
egwGridDataQueue.prototype.flushQueue = function(_doPrefetch)
|
|
{
|
|
var ids = [];
|
|
|
|
if (_doPrefetch)
|
|
{
|
|
// Get the count of elements which will be dynamically added to the list, "prefetched"
|
|
var prefetch_cnt = Math.min(EGW_DATA_QUEUE_PREFETCH_COUNT,
|
|
Math.max(0, EGW_DATA_QUEUE_MAX_ELEM_COUNT - this.queue.length));
|
|
|
|
this.prefetch(prefetch_cnt);
|
|
}
|
|
|
|
// Generate a list of element ids
|
|
for (var i = 0; i < this.queue.length; i++)
|
|
{
|
|
var id = this.queue[i].elem.id;
|
|
if (id == this.queue[i].elem.id)
|
|
{
|
|
if (this.queue[i].type == EGW_DATA_QUEUE_CHILDREN)
|
|
{
|
|
id = "[CHILDREN]" + id;
|
|
}
|
|
}
|
|
|
|
ids.push(id);
|
|
}
|
|
|
|
// Call the fetch callback and save a snapshot of the current queue
|
|
var queue = this.queue;
|
|
this.fetchCallback.call(this.context, ids, this.queueColumns, function(_data) {
|
|
this.dataCallback(_data, queue);
|
|
}, this);
|
|
|
|
this.queue = [];
|
|
this.queueColumns = [];
|
|
this.timeoutId = 0;
|
|
}
|
|
|
|
/**
|
|
* Internal function which is called when the data is received from the fetchCallback.
|
|
*
|
|
* @param _data contains the data which has been retrieved by the fetchCallback
|
|
* @param _queue is the list of elements which had been requested.
|
|
*/
|
|
egwGridDataQueue.prototype.dataCallback = function(_data, _queue)
|
|
{
|
|
var rootData = [];
|
|
try
|
|
{
|
|
// Iterate over the given data and check whether the data coresponds to one
|
|
// of the queue elements - if yes, call their (probably) specified callback.
|
|
// All elements for which no queue element can be found are added to the
|
|
// "rootData" list, which is then loaded by the "dataRoot" data object.
|
|
var i = 0;
|
|
for (var i = 0; i < _data.length; i++)
|
|
{
|
|
var hasTarget = false;
|
|
|
|
// Search for a queue element which belongs to the given data entry.
|
|
if (_queue.length > 0 && typeof _data[i].id != "undefined")
|
|
{
|
|
var id = _data[i].id;
|
|
|
|
for (var j = 0; j < _queue.length; j++)
|
|
{
|
|
if (_queue[j].elem.id == id)
|
|
{
|
|
_queue[j].elem.loadData(_data[i], true);
|
|
|
|
// Call the queue object callback (if specified)
|
|
if (_queue[j].callback)
|
|
{
|
|
_queue[j].callback.call(_queue[j].context);
|
|
}
|
|
|
|
// Delete this queue element
|
|
_queue.splice(j, 1);
|
|
|
|
hasTarget = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!hasTarget)
|
|
{
|
|
rootData.push(_data[i]);
|
|
}
|
|
}
|
|
|
|
this.dataRoot.loadData(rootData, true);
|
|
}
|
|
finally
|
|
{
|
|
this.dataRoot.callEndUpdate();
|
|
}
|
|
}
|
|
|