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https://github.com/EGroupware/egroupware.git
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430 lines
10 KiB
JavaScript
430 lines
10 KiB
JavaScript
/**
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* eGroupWare eTemplate2
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage dataview
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* @link http://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright Stylite 2011-2012
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* @version $Id$
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*/
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/*egw:uses
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et2_dataview_view_aoi;
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egw_action.egw_keymanager;
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*/
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/**
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* The selectioManager is internally used by the et2_dataview_controller class
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* to manage the row selection.
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* As the action system does not allow selection of entries which are currently
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* not in the dom tree, we have to manage this in this class. The idea is to
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* manage an external action object interface for each visible row and proxy all
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* state changes between an dummy action object, that does no selection handling,
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* and the external action object interface.
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*/
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var et2_dataview_selectionManager = Class.extend({
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init: function (_indexMap, _actionObjectManager, _queryRangeCallback,
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_makeVisibleCallback, _context) {
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// Copy the arguments
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this._indexMap = _indexMap;
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this._actionObjectManager = _actionObjectManager;
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this._queryRangeCallback = _queryRangeCallback;
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this._makeVisibleCallback = _makeVisibleCallback;
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this._context = _context;
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// Internal map which contains all curently selected uids and their
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// state
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this._registeredRows = {};
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this._focusedEntry = null;
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this._invertSelection = false;
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this._inUpdate = false;
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this._total = 0;
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},
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setIndexMap: function (_indexMap) {
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this._indexMap = _indexMap;
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},
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setTotalCount: function (_total) {
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this._total = _total;
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},
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registerRow: function (_uid, _idx, _tr, _links) {
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// Get the corresponding entry from the registered rows array
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var entry = this._getRegisteredRowsEntry(_uid);
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// If the row has changed unregister the old one and do not delete
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// entry from the entry map
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if (entry.tr && entry.tr !== _tr) {
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this.unregisterRow(_uid, entry.tr, true);
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}
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// Create the AOI for the tr
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if (!entry.tr && _links)
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{
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this._attachActionObjectInterface(entry, _tr, _uid);
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this._attachActionObject(entry, _tr, _uid, _links, _idx)
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}
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// Update the entry
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entry.ao._index = entry.idx = _idx;
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entry.tr = _tr;
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// Update the visible state of the _tr
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this._updateEntryState(entry, entry.state);
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},
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unregisterRow: function (_uid, _tr, _noDelete) {
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// _noDelete defaults to false
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_noDelete = _noDelete ? true : false;
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if (typeof this._registeredRows[_uid] !== "undefined"
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&& this._registeredRows[_uid].tr === _tr)
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{
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this._inUpdate = true;
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this._registeredRows[_uid].tr = null;
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this._registeredRows[_uid].aoi = null;
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// Remove the action object from its container
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if (this._registeredRows[_uid].ao)
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{
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this._registeredRows[_uid].ao.remove();
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this._registeredRows[_uid].ao = null;
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}
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if (!_noDelete
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&& this._registeredRows[_uid].state === EGW_AO_STATE_NORMAL)
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{
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delete this._registeredRows[_uid];
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}
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this._inUpdate = false;
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}
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},
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resetSelection: function () {
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this._invertSelection = false;
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for (var key in this._registeredRows)
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{
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this.setSelected(key, false);
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}
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},
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setSelected: function (_uid, _selected) {
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var entry = this._getRegisteredRowsEntry(_uid);
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this._updateEntryState(entry,
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egwSetBit(entry.state, EGW_AO_STATE_SELECTED, _selected));
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},
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setFocused: function (_uid, _focused) {
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// Reset the state of the currently focused entry
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if (this._focusedEntry)
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{
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this._updateEntryState(this._focusedEntry,
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egwSetBit(this._focusedEntry.state, EGW_AO_STATE_FOCUSED,
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false));
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this._focusedEntry = null;
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}
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// Mark the new given uid as focused
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if (_focused)
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{
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var entry = this._focusedEntry = this._getRegisteredRowsEntry(_uid);
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this._updateEntryState(entry,
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egwSetBit(entry.state, EGW_AO_STATE_FOCUSED, true));
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}
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},
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selectAll: function () {
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// Reset the selection
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this.resetSelection();
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// Set the "invert selection" flag
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this._invertSelection = true;
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// Update the selection
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for (var key in this._registeredRows)
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{
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var entry = this._registeredRows[key];
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this._updateEntryState(entry, entry.state);
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}
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},
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getSelected: function () {
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// Collect all currently selected ids
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var ids = [];
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for (var key in this._registeredRows)
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{
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if (egwBitIsSet(this._registeredRows[key].state, EGW_AO_STATE_SELECTED))
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{
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ids.push(key);
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}
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}
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// Return an array containing those ids
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return {
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"inverted": this._invertSelection,
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"ids": ids
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}
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},
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/** -- PRIVATE FUNCTIONS -- **/
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_attachActionObjectInterface: function (_entry, _tr, _uid) {
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// Create the AOI which is used internally in the selection manager
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// this AOI is not connected to the AO, as the selection manager
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// cares about selection etc.
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_entry.aoi = new et2_dataview_rowAOI(_tr);
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_entry.aoi.setStateChangeCallback(
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function (_newState, _changedBit, _shiftState) {
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if (_changedBit === EGW_AO_STATE_SELECTED)
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{
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// Call the select handler
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this._handleSelect(
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_uid,
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_entry,
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egwBitIsSet(_shiftState, EGW_AO_SHIFT_STATE_BLOCK),
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egwBitIsSet(_shiftState, EGW_AO_SHIFT_STATE_MULTI)
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);
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}
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}, this);
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},
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_getDummyAOI: function (_entry, _tr, _uid, _idx) {
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// Create AOI
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var dummyAOI = new egwActionObjectInterface();
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var self = this;
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// Handling for Action Implementations updating the state
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dummyAOI.doSetState = function (_state) {
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if (!self._inUpdate)
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{
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// Update the "focused" flag
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self.setFocused(_uid, egwBitIsSet(_state, EGW_AO_STATE_FOCUSED));
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// Generally update the state
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self._updateState(_uid, _state);
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}
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};
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// Handle the "make visible" event, pass the request to the parent
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// controller
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dummyAOI.doMakeVisible = function () {
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self._makeVisibleCallback.call(self._context, _idx);
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}
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// Connect the the two AOIs
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dummyAOI.doTriggerEvent = _entry.aoi.doTiggerEvent;
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// Implementation of the getDOMNode function, so that the event
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// handlers can be properly bound
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dummyAOI.getDOMNode = function () { return _tr; };
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return dummyAOI;
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},
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_attachActionObject: function (_entry, _tr, _uid, _links, _idx) {
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// Get the dummyAOI which connects the action object to the tr but
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// does no selection handling
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var dummyAOI = this._getDummyAOI(_entry, _tr, _uid, _idx);
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// Create an action object for the tr and connect it to a dummy AOI
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_entry.ao = this._actionObjectManager.addObject(_uid, dummyAOI);
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_entry.ao.updateActionLinks(_links);
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_entry.ao._index = _idx;
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// Overwrite some functions like "traversePath", "getNext" and
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// "getPrevious"
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var self = this;
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function getIndexAO (_idx) {
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// Check whether the index is in the index map
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if (typeof self._indexMap[_idx] !== "undefined"
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&& self._indexMap[_idx].uid)
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{
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return self._getRegisteredRowsEntry(self._indexMap[_idx].uid).ao;
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}
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return null;
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}
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function getElementRelatively (_step) {
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return getIndexAO(Math.max(0,
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Math.min(self._total - 1, _entry.idx + _step)));
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};
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_entry.ao.getPrevious = function (_step) {
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return getElementRelatively(-_step);
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};
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_entry.ao.getNext = function (_step) {
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return getElementRelatively(_step);
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};
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_entry.ao.traversePath = function (_obj) {
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// Get the start and the stop index
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var s = Math.min(this._index, _obj._index);
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var e = Math.max(this._index, _obj._index);
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var result = [];
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for (var i = s; i < e; i++)
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{
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var ao = getIndexAO(i);
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if (ao)
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{
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result.push(ao);
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}
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}
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return result;
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};
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},
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_updateState: function (_uid, _state) {
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var entry = this._getRegisteredRowsEntry(_uid);
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this._updateEntryState(entry, _state);
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return entry;
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},
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_updateEntryState: function (_entry, _state) {
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// Update the state of the entry
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_entry.state = _state;
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if (this._invertSelection)
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{
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_state ^= EGW_AO_STATE_SELECTED;
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}
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// Update the state if it has changed
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if ((_entry.aoi && _entry.aoi.getState() !== _state) || _entry.state != _state)
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{
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this._inUpdate = true; // Recursion prevention
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// Update the visual state
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if (_entry.aoi)
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{
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_entry.aoi.setState(_state);
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}
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// Update the state of the action object
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if (_entry.ao)
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{
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_entry.ao.setSelected(egwBitIsSet(_state, EGW_AO_STATE_SELECTED));
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_entry.ao.setFocused(egwBitIsSet(_state, EGW_AO_STATE_FOCUSED));
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}
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this._inUpdate = false;
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// Delete the element if state was set to "NORMAL" and there is
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// no tr
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if (_state === EGW_AO_STATE_NORMAL && !_entry.tr)
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{
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delete this._registeredRows[_entry.uid];
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}
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}
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},
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_getRegisteredRowsEntry: function (_uid) {
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if (typeof this._registeredRows[_uid] === "undefined")
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{
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this._registeredRows[_uid] = {
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"uid": _uid,
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"idx": null,
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"state": EGW_AO_STATE_NORMAL,
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"tr": null,
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"aoi": null,
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"ao": null
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};
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}
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return this._registeredRows[_uid];
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},
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_handleSelect: function (_uid, _entry, _shift, _ctrl) {
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// If not "_ctrl" is set, reset the selection
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if (!_ctrl)
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{
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this.resetSelection();
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}
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// Mark the element that was clicked as selected
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var entry = this._getRegisteredRowsEntry(_uid);
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this.setSelected(_uid,
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!_ctrl || !egwBitIsSet(entry.state, EGW_AO_STATE_SELECTED));
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// Focus the element if shift is not pressed
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if (!_shift)
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{
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this.setFocused(_uid, true);
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}
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else if (this._focusedEntry)
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{
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this._selectRange(this._focusedEntry.idx, _entry.idx);
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}
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},
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_selectRange: function (_start, _stop) {
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// Contains ranges that are not currently in the index map and that have
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// to be queried
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var queryRanges = [];
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// Iterate over the given range and select the elements in the range
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// from _start to _stop
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var naStart = false;
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var s = Math.min(_start, _stop);
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var e = Math.max(_stop, _start);
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for (var i = s; i <= e; i++)
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{
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if (typeof this._indexMap[i] !== "undefined" &&
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this._indexMap[i].uid)
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{
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// Add the range to the "queryRanges"
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if (naStart !== false) {
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queryRanges.push(et2_bounds(naStart, i - 1));
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naStart = false;
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}
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// Select the element
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this.setSelected(this._indexMap[i].uid, true);
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} else if (naStart === false) {
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naStart = i;
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}
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}
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// Add the last range to the "queryRanges"
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if (naStart !== false) {
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queryRanges.push(et2_bounds(naStart, i - 1));
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naStart = false;
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}
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// Query all unknown ranges from the server
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for (var i = 0; i < queryRanges.length; i++)
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{
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this._queryRangeCallback.call(this._context, queryRanges[i],
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function (_order) {
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for (var j = 0; j < _order.length; j++)
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{
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this.setSelected(_order[j], true);
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}
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}, this);
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}
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}
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});
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