forked from extern/egroupware
307 lines
6.6 KiB
JavaScript
307 lines
6.6 KiB
JavaScript
/**
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* eGroupWare eTemplate2 - JS content array manager
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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 api
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* @link http://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright Stylite 2011
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* @version $Id$
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*/
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"use strict";
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/*egw:uses
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et2_core_inheritance;
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*/
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var et2_arrayMgr = Class.extend({
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splitIds: true,
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init: function(_data, _parentMgr) {
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if (typeof _parentMgr == "undefined")
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{
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_parentMgr = null;
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}
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// Copy the parent manager which is needed to access relative data when
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// being in a relative perspective of the manager
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this.parentMgr = _parentMgr;
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// Hold a reference to the data
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if (typeof _data == "undefined" || !_data)
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{
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et2_debug("error", "Invalid data passed to content array manager!");
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_data = {};
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}
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this.data = _data;
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// Holds information about the current perspective
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this.perspectiveData = {
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"owner": null,
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"key": null,
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"row": 0
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}
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},
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/**
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* Returns the root content array manager object
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*/
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getRoot : function() {
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if (this.parentMgr != null)
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{
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return this.parentMgr.getRoot();
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}
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return this;
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},
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getValueForID : function(_id) {
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if (typeof this.data[_id] != "undefined")
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{
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return this.data[_id];
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}
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return null;
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},
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/**
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* Returns the path to this content array manager perspective as an array
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* containing the key values
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*
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* @param _path is used internally, do not supply it manually.
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*/
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getPath : function(_path) {
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if (typeof _path == "undefined")
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{
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_path = [];
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}
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if (this.perspectiveData.key != null)
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{
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_path.push(this.perspectiveData.key);
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}
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if (this.parentMgr != null)
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{
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this.parentMgr.getPath(_path);
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}
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return _path;
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},
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/**
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* Get array entry is the equivalent to the boetemplate get_array function.
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* It returns a reference to the (sub) array with the given key. This also works
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* for keys using the ETemplate referencing scheme like a[b][c]
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*
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* @param _key is the string index, may contain sub-indices like a[b]
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* @param _referenceInto if true none-existing sub-arrays/-indices get created
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* to be returned as reference, else false is returned. Defaults to false
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* @param _skipEmpty returns false if _key is not present in this content array.
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* Defaults to false.
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*/
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getEntry : function(_key, _referenceInto, _skipEmpty) {
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if (typeof _referenceInto == "undefined")
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{
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_referenceInto = false;
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}
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if (typeof _skipEmpty == "undefined")
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{
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_skipEmpty = false;
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}
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// Parse the given key by removing the "]"-chars and splitting at "["
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var indexes = [_key];
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if (this.splitIds)
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{
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indexes = _key.replace(/]/g,'').split('[');
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}
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var entry = this.data;
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for (var i = 0; i < indexes.length; i++)
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{
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// Abort if the current entry is not an object (associative array) and
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// we should descend further into it.
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var isObject = entry instanceof Object;
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if (!isObject && !_referenceInto)
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{
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return null;
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}
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// Check whether the entry actually exists
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var idx = indexes[i];
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if (_skipEmpty && (!isObject || typeof entry[idx] == "undefined"))
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{
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return null;
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}
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entry = entry[idx];
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}
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return entry;
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},
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/**
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* Equivaltent to the boetemplate::expand_name function.
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*
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* Expands variables inside the given identifier to their values inside the
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* content array.
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*/
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expandName : function(_ident) {
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// Check whether the identifier refers to an index in the content array
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var is_index_in_content = _ident.charAt(0) == '@';
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// Check whether "$" occurs in the given identifier
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var pos_var = _ident.indexOf('$');
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if (pos_var >= 0)
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{
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// TODO
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}
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if (is_index_in_content)
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{
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// If an additional "@" is specified, this means that we have to return
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// the entry from the root element
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if (_ident.charAt(1) == '@')
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{
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_ident = this.getRoot().getEntry(_ident.substr(2));
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}
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else
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{
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_ident = this.getEntry(_ident.substr(1));
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}
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}
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return _ident;
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},
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parseBoolExpression: function(_expression) {
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// If the first char of the expression is a '!' this means, that the value
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// is to be negated.
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if (_expression.charAt(0) == '!')
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{
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return !this.parseBoolExpression(_expression.substr(1));
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}
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// Split the expression at a possible "="
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var parts = _expression.split('=');
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// Expand the first value
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var val = this.expandName(parts[0]);
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// If a second expression existed, test that one
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if (typeof parts[1] != "undefined")
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{
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// Expand the second value
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var checkVal = this.expandName(parts[1]);
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// Values starting with / are treated as regular expression. It is
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// checked whether the first value matches the regular expression
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if (checkVal.charAt(0) == '/')
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{
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return (new RegExp(checkVal.substr(1, checkVal.length - 2)))
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.test(val) ? true : false;
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}
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// Otherwise check for simple equality
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return val == checkVal;
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}
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return et2_evalBool(val);
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},
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openPerspective: function(_owner, _root, _row)
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{
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// Get the root node
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var root = typeof _root == "string" ? this.data[_root] :
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(_root == null ? this.data : _root);
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// Create a new content array manager with the given root
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var mgr = new et2_arrayMgr(root, this);
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// Set the owner
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mgr.perspectiveData.owner = _owner;
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// Set the root key
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if (typeof _root == "string")
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{
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mgr.perspectiveData.key = _root;
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}
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// Set _row parameter
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if (typeof _row != "undefined")
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{
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mgr.perspectiveData.row = _row;
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}
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return mgr;
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}
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});
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var et2_readonlysArrayMgr = et2_arrayMgr.extend({
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splitIds: false,
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isReadOnly: function(_id, _attr, _parent) {
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var entry = null;
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if (_id != null)
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{
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entry = this.getEntry(_id);
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}
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// Let the array entry override the read only attribute entry
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if (typeof entry != "undefined" && !(entry instanceof Object))
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{
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return entry;
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}
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// If the attribute is set, return that
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if (typeof _attr != "undefined" && _attr !== null)
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{
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return et2_evalBool(_attr);
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}
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// Otherwise take into accounf whether the parent is readonly
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if (typeof _parent != "undefined" && _parent)
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{
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return true;
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}
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// Otherwise return the default value
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return (typeof this.getEntry("__ALL__") != "undefined");
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}
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});
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/**
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* Creates a new set of array managers
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*/
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function et2_arrayMgrs_expand(_owner, _mgrs, _data, _row)
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{
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// Create a copy of the given _mgrs associative array
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var result = {};
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// Merge the given data associative array into the existing array managers
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for (var key in _data)
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{
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if (typeof _mgrs[key] != "undefined")
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{
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// Open a perspective for the given data row
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result[key] = _mgrs[key].openPerspective(_owner,
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_data[key], _row);
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}
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}
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// Return the resulting managers object
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return result;
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}
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