egroupware/api/js/etemplate/et2_core_arrayMgr.ts

552 lines
14 KiB
TypeScript

/**
* EGroupware eTemplate2 - JS content array manager
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link https://www.egroupware.org
* @author Andreas Stöckel
*/
/*egw:uses
et2_core_common;
egw_inheritance;
et2_core_phpExpressionCompiler;
*/
import {et2_evalBool} from "./et2_core_common";
import type {et2_widget} from "./et2_core_widget";
import {egw} from "../jsapi/egw_global";
import {et2_compilePHPExpression} from "./et2_core_phpExpressionCompiler";
/**
* Manage access to various template customisation arrays passed to etemplate->exec().
*
* This manages access to content, modifications and readonlys arrays
*/
export class et2_arrayMgr
{
splitIds : boolean = true;
public data : object;
// Holds information about the current perspective
public perspectiveData : { owner : et2_widget; row : number; key : string } = {
"owner": null,
"key": null,
"row": null
};
protected static compiledExpressions : object = {};
private readonly _parentMgr : et2_arrayMgr;
protected readOnly : boolean = false;
/**
* Constructor
*
* @memberOf et2_arrayMgr
* @param _data
* @param _parentMgr
*/
constructor(_data : object = {}, _parentMgr? : et2_arrayMgr)
{
if(typeof _parentMgr == "undefined")
{
_parentMgr = null;
}
// Copy the parent manager which is needed to access relative data when
// being in a relative perspective of the manager
this._parentMgr = _parentMgr;
// Hold a reference to the data
if(typeof _data == "undefined" || !_data)
{
egw.debug("log", "No data passed to content array manager. Probably a mismatch between template namespaces and data.");
_data = {};
}
// Expand sub-arrays that have been shmushed together, so further perspectives work
// Shmushed keys look like: ${row}[info_cat]
// Expanded: ${row}: Object{info_cat: ..value}
if(this.splitIds)
{
// For each index, we need a key: {..} sub array
for(let key in _data)
{
// Split up indexes
const indexes = key.replace(/[/g, "[").split('[');
// Put data in the proper place
if(indexes.length > 1)
{
const value = _data[key];
let target = _data;
for(let i = 0; i < indexes.length; i++)
{
indexes[i] = indexes[i].replace(/&#x5D;/g, '').replace(']', '');
if(typeof target[indexes[i]] == "undefined" || target[indexes[i]] === null)
{
target[indexes[i]] = i == indexes.length - 1 ? value : {};
}
target = target[indexes[i]];
}
delete _data[key];
}
}
}
this.data = _data;
}
/**
* Returns the root content array manager object
*/
getRoot() : et2_arrayMgr
{
if(this._parentMgr != null)
{
return this._parentMgr.getRoot();
}
return this;
}
getParentMgr() : et2_arrayMgr
{
return this._parentMgr;
}
getPerspectiveData() : { owner : et2_widget; row : number; key : string }
{
return this.perspectiveData;
}
setPerspectiveData(new_perspective : { owner : et2_widget; row : number; key : string })
{
this.perspectiveData = new_perspective;
}
setRow(new_row : number)
{
this.perspectiveData.row = new_row;
}
/**
* Explodes compound keys (eg IDs) into a list of namespaces
* This uses no internal values, just expands
*
* eg:
* a[b][c] => [a,b,c]
* col_filter[tr_tracker] => [col_filter, tr_tracker]
*
* @param {string} _key
*
* @return {string[]}
*/
explodeKey(_key : string) : string[]
{
if(!_key || typeof _key == 'string' && _key.trim() === "")
{
return [];
}
// Parse the given key by removing the "]"-chars and splitting at "["
let indexes = [_key];
if(typeof _key === "string")
{
_key = _key.replace(/&#x5B;/g, "[").replace(/&#x5D;/g, "]");
indexes = _key.split('[');
}
if(indexes.length > 1)
{
indexes = [indexes.shift(), indexes.join('[')];
indexes[1] = indexes[1].substring(0, indexes[1].length - 1);
const children = indexes[1].split('][');
if(children.length)
{
indexes = jQuery.merge([indexes[0]], children);
}
}
return indexes;
}
/**
* Returns the path to this content array manager perspective as an array
* containing the key values
*
* @param _path is used internally, do not supply it manually.
*/
getPath(_path? : string[]) : string[]
{
if(typeof _path == "undefined")
{
_path = [];
}
if(this.perspectiveData.key != null)
{
// prepend components of this.perspectiveData.key to path, can be more then one eg. "nm[rows]"
_path = this.perspectiveData.key.replace(/]/g, '').split('[').concat(_path);
}
if(this._parentMgr != null)
{
_path = this._parentMgr.getPath(_path);
}
return _path;
}
/**
* Get array entry is the equivalent to the boetemplate get_array function.
* It returns a reference to the (sub) array with the given key. This also works
* for keys using the ETemplate referencing scheme like a[b][c]
*
* @param _key is the string index, may contain sub-indices like a[b]
* @param _referenceInto if true none-existing sub-arrays/-indices get created
* to be returned as reference, else false is returned. Defaults to false
* @param _skipEmpty returns null if _key is not present in this content array.
* Defaults to false.
*/
getEntry(_key : string, _referenceInto? : boolean, _skipEmpty? : boolean) : any
{
if(typeof _referenceInto == "undefined")
{
_referenceInto = false;
}
if(typeof _skipEmpty == "undefined")
{
_skipEmpty = false;
}
// Parse the given key by removing the "]"-chars and splitting at "["
const indexes = this.explodeKey(_key);
if(indexes.length == 0 && _skipEmpty)
{
return null;
}
let entry = this.data;
for(let i = 0; i < indexes.length; i++)
{
// Abort if the current entry is not an object (associative array) and
// we should descend further into it.
const isObject = typeof entry === 'object';
if(!isObject && !_referenceInto || entry == null || jQuery.isEmptyObject(entry))
{
return null;
}
// Check whether the entry actually exists
const idx = indexes[i];
if(_skipEmpty && (!isObject || typeof entry[idx] == "undefined"))
{
return null;
}
entry = entry[idx];
}
return entry;
}
/**
* Equivalent to the boetemplate::expand_name function.
*
* Expands variables inside the given identifier to their values inside the
* content array.
*
* @param {string} _ident Key used to reference into managed array
* @return {*}
*/
expandName(_ident : string) : string | object
{
// Check whether the identifier refers to an index in the content array
const is_index_in_content = _ident.charAt(0) == '@';
// Check whether "$" occurs in the given identifier
const pos_var = _ident.indexOf('$');
if(pos_var >= 0 && (this.perspectiveData.row != null || !_ident.match(/\$\{?row\}?/))
// Avoid messing with regex in validators
&& pos_var !== _ident.indexOf("$/")
)
{
// Get the content array for the current row
const row = typeof this.perspectiveData.row == 'number' ? this.perspectiveData.row : '';
const row_cont = this.data[row] || {};
// $cont is NOT root but current name-space in old eTemplate
const cont = this.data;//getRoot().data;
const _cont = this.data;// according to a grep only used in ImportExport just twice
// Check whether the expression has already been compiled - if not,
// try to compile it first. If an error occurs, the identifier
// function is set to null
if(typeof et2_arrayMgr.compiledExpressions[_ident] == "undefined")
{
try
{
if(this.perspectiveData.row == null)
{
// No row, compile for only top level content
// @ts-ignore
et2_arrayMgr.compiledExpressions[_ident] = et2_compilePHPExpression(
_ident, ["cont", "_cont"]);
}
else
{
// @ts-ignore
et2_arrayMgr.compiledExpressions[_ident] = et2_compilePHPExpression(
_ident, ["row", "cont", "row_cont", "_cont"]);
}
}
catch(e)
{
et2_arrayMgr.compiledExpressions[_ident] = null;
egw.debug("error", "Error while compiling PHP->JS ", e);
}
}
// Execute the previously compiled expression, if it is not "null"
// because compilation failed. The parameters have to be in the same
// order as defined during compilation.
if(et2_arrayMgr.compiledExpressions[_ident])
{
try
{
if(this.perspectiveData.row == null)
{
// No row, exec with only top level content
_ident = et2_arrayMgr.compiledExpressions[_ident](cont, _cont);
}
else
{
_ident = et2_arrayMgr.compiledExpressions[_ident](row, cont, row_cont, _cont);
}
}
catch(e)
{
// only log error, as they are no real errors but missing data
egw.debug("log", typeof e == 'object' ? e.message : e);
_ident = null;
}
}
}
if(is_index_in_content && _ident)
{
// If an additional "@" is specified, this means that we have to return
// the entry from the root element
if(_ident.charAt(1) == '@')
{
return this.getRoot().getEntry(_ident.substr(2));
}
else
{
return this.getEntry(_ident.substr(1));
}
}
return _ident;
}
parseBoolExpression(_expression : string)
{
if (typeof _expression === "undefined" || _expression === null)
{
return false;
}
// Check whether "$" occurs in the given identifier, don't parse rows if we're not in a row
// This saves booleans in repeating rows from being parsed too early - we'll parse again when repeating
if(_expression.indexOf('$') >= 0 && this.perspectiveData.row == null && _expression.match(/\$\{?row\}?/))
{
return _expression;
}
// If the first char of the expression is a '!' this means, that the value
// is to be negated.
if(_expression.charAt(0) == '!')
{
return !this.parseBoolExpression(_expression.substr(1));
}
// Split the expression at a possible "="
const parts = _expression.split('=');
// Expand the first value
let val = this.expandName(parts[0]);
val = (typeof val == "undefined" || val === null) ? '' : '' + val;
// If a second expression existed, test that one
if(typeof parts[1] != "undefined")
{
// Expand the second value
const checkVal = '' + this.expandName(parts[1]);
// Values starting with / are treated as regular expression. It is
// checked whether the first value matches the regular expression
if(checkVal.charAt(0) == '/')
{
return (new RegExp(checkVal.substr(1, checkVal.length - 2)))
.test(val);
}
// Otherwise check for simple equality
return val == checkVal;
}
return et2_evalBool(val);
}
/**
* ?
*
* @param {object} _owner owner object
* @param {(string|null|object)} _root string with key, null for whole data or object with data
* @param {number?} _row key for into the _root for the desired row
*/
openPerspective(_owner : et2_widget, _root : (string | null | object), _row? : number | null) : et2_arrayMgr
{
// Get the root node
let root = typeof _root == "string" ? this.data[_root] :
(_root == null ? this.data : _root);
if(typeof root == "undefined" && typeof _root == "string")
{
root = this.getEntry(_root);
}
// Create a new content array manager with the given root
const constructor = this.readOnly ? et2_readonlysArrayMgr : et2_arrayMgr;
const mgr = new constructor(root, this);
// Set the owner
mgr.perspectiveData.owner = _owner;
// Set the root key
if(typeof _root == "string")
{
mgr.perspectiveData.key = _root;
}
// Set _row parameter
if(typeof _row != "undefined")
{
mgr.perspectiveData.row = _row;
}
return mgr;
}
}
/**
* @augments et2_arrayMgr
*/
export class et2_readonlysArrayMgr extends et2_arrayMgr
{
readOnly : boolean = true;
/**
* Find out if the given ID is readonly, according to the array data
*
* @memberOf et2_readonlysArrayMgr
* @param _id
* @param _attr
* @param _parent
* @returns
*/
isReadOnly(_id : string, _attr : string, _parent? : et2_arrayMgr) : boolean | string
{
let entry = null;
if(_id != null)
{
if(_id.indexOf('$') >= 0 || _id.indexOf('@') >= 0)
{
_id = this.expandName(_id);
}
// readonlys was not namespaced in old eTemplate, therefore if we dont find data
// under current namespace, we look into parent
// (if there is anything namespaced, we will NOT look for parent!)
let mgr : et2_arrayMgr = this;
while(mgr.getParentMgr() && jQuery.isEmptyObject(mgr.data))
{
mgr = mgr.getParentMgr();
}
entry = mgr.getEntry(_id);
}
// Let the array entry override the read only attribute entry
if(typeof entry != "undefined" && !(typeof entry === 'object'))
{
return entry;
}
// If the attribute is set, return that
if(typeof _attr != "undefined" && _attr !== null)
{
// Accept 'editable', but otherwise boolean
return typeof _attr === 'string' && this.expandName(_attr) === 'editable' ? 'editable' : et2_evalBool(_attr);
}
// Otherwise take into accounf whether the parent is readonly
if(typeof _parent != "undefined" && _parent)
{
return true;
}
// Otherwise return the default value
entry = this.getEntry("__ALL__");
return entry !== null && (typeof entry != "undefined");
}
/**
* Override parent to handle cont and row_cont.
*
* Normally these should refer to the readonlys data, but that's not
* useful, so we use the owner inside perspective data to expand using content.
*
* @param {string} ident Key for searching into the array.
* @returns {*}
*/
expandName(ident : string) : any
{
return this.perspectiveData.owner.getArrayMgr('content').expandName(ident);
}
}
/**
* Creates a new set of array managers
*
* @param _owner is the owner object of the array managers - this object (a widget)
* will free the array manager
* @param _mgrs is the original set of array managers, the array managers are
* inside an associative array as recived from et2_widget::getArrayMgrs()
* @param _data is an associative array of new data which will be merged into the
* existing array managers.
* @param _row is the row for which the array managers will be opened.
*/
export function et2_arrayMgrs_expand(_owner : et2_widget, _mgrs : object, _data : object, _row : number)
{
// Create a copy of the given _mgrs associative array
let result = {};
// Merge the given data associative array into the existing array managers
for(let key in _mgrs)
{
result[key] = _mgrs[key];
if(typeof _data[key] != "undefined")
{
// Open a perspective for the given data row
let rowData = {};
rowData[_row] = _data[key];
result[key] = _mgrs[key].openPerspective(_owner, rowData, _row);
}
}
// Return the resulting managers object
return result;
}