forked from extern/egroupware
539 lines
12 KiB
JavaScript
539 lines
12 KiB
JavaScript
/**
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* eGroupWare eTemplate2 - JS Description object
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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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jquery.jquery;
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et2_DOMWidget;
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et2_xml;
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*/
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/**
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* Class which implements the "grid" XET-Tag
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*/
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var et2_grid = et2_DOMWidget.extend({
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init: function(_parent) {
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// Create the table body and the table
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this.tbody = $j(document.createElement("tbody"));
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this.table = $j(document.createElement("table"))
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.addClass("et2_grid");
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this.table.append(this.tbody);
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// Call the parent constructor
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this._super.apply(this, arguments);
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// Counters for rows and columns
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this.rowCount = 0;
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this.columnCount = 0;
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// 2D-Array which holds references to the DOM td tags
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this.cells = [];
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this.managementArray = [];
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},
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destroy: function() {
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this._super.call(this, arguments);
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// Delete all references to cells or widgets
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this.cells = null;
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this.managementArray = null;
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},
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_initCells: function(_colData, _rowData) {
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// Copy the width and height
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var w = _colData.length;
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var h = _rowData.length;
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// Create the 2D-Cells array
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var cells = new Array(h);
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for (var y = 0; y < h; y++)
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{
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cells[y] = new Array(w);
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// Initialize the cell description objects
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for (var x = 0; x < w; x++)
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{
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cells[y][x] = {
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"td": null,
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"widget": null,
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"colData": _colData[x],
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"rowData": _rowData[y],
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"colSpan": 1,
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"autoColSpan": false,
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"rowSpan": 1,
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"autoRowSpan": false,
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"x": x,
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"y": y
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};
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}
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}
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return cells;
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},
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_getColDataEntry: function() {
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return {
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"width": "auto",
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"class": "",
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"align": "",
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"span": "1"
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};
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},
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_getRowDataEntry: function() {
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return {
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"height": "auto",
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"class": "",
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"valign": "",
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"span": "1"
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};
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},
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_getCell: function(_cells, _x, _y) {
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if ((0 <= _y) && (_y < _cells.length))
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{
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var row = _cells[_y];
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if ((0 <= _x) && (_x < row.length))
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{
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return row[_x];
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}
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}
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throw("Error while accessing grid cells, invalid element count or span value!");
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},
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_forceNumber: function(_val) {
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if (isNaN(_val))
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{
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throw(_val + " is not a number!");
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}
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return parseInt(_val);
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},
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_fetchRowColData: function(columns, rows, colData, rowData) {
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// Parse the columns tag
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et2_filteredNodeIterator(columns, function(node, nodeName) {
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var colDataEntry = this._getColDataEntry();
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if (nodeName == "column")
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{
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colDataEntry["width"] = et2_readAttrWithDefault(node, "width", "auto");
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colDataEntry["class"] = et2_readAttrWithDefault(node, "class", "");
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colDataEntry["align"] = et2_readAttrWithDefault(node, "align", "");
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colDataEntry["span"] = et2_readAttrWithDefault(node, "span", "1");
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}
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else
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{
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colDataEntry["span"] = "all";
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}
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colData.push(colDataEntry);
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}, this);
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// Parse the rows tag
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et2_filteredNodeIterator(rows, function(node, nodeName) {
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var rowDataEntry = this._getRowDataEntry();
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if (nodeName == "row")
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{
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rowDataEntry["height"] = et2_readAttrWithDefault(node, "height", "auto");
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rowDataEntry["class"] = et2_readAttrWithDefault(node, "class", "");
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rowDataEntry["valign"] = et2_readAttrWithDefault(node, "valign", "");
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rowDataEntry["span"] = et2_readAttrWithDefault(node, "span", "1");
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}
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else
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{
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rowDataEntry["span"] = "all";
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}
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rowData.push(rowDataEntry);
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}, this);
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},
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_fillCells: function(cells, columns, rows) {
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var h = cells.length;
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var w = (h > 0) ? cells[0].length : 0;
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// Read the elements inside the columns
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var x = 0;
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et2_filteredNodeIterator(columns, function(node, nodeName) {
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function _readColNode(node, nodeName) {
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if (y >= h)
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{
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et2_debug("warn", "Skipped grid cell in column, '" +
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nodeName + "'");
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return;
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}
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var cell = this._getCell(cells, x, y);
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// Read the span value of the element
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if (node.getAttribute("span"))
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{
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cell.rowSpan = node.getAttribute("span");
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}
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else
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{
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cell.rowSpan = cell.colData["span"];
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cell.autoRowSpan = true;
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}
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if (cell.rowSpan == "all")
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{
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cell.rowSpan = cells.length;
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}
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var span = cell.rowSpan = this._forceNumber(cell.rowSpan);
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// Create the widget
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var widget = this.createElementFromNode(node, nodeName);
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// Fill all cells the widget is spanning
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for (var i = 0; i < span && y < cells.length; i++, y++)
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{
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this._getCell(cells, x, y).widget = widget;
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}
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};
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// If the node is a column, create the widgets which belong into
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// the column
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var y = 0;
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if (nodeName == "column")
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{
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et2_filteredNodeIterator(node, _readColNode, this);
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}
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else
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{
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_readColNode.call(this, node, nodeName);
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}
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x++;
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}, this);
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// Read the elements inside the rows
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var y = 0;
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et2_filteredNodeIterator(rows, function(node, nodeName) {
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function _readRowNode(node, nodeName) {
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if (x >= w)
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{
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et2_debug("warn", "Skipped grid cell in row, '" +
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nodeName + "'");
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return;
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}
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var cell = this._getCell(cells, x, y);
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// Read the span value of the element
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if (node.getAttribute("span"))
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{
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cell.colSpan = node.getAttribute("span");
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}
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else
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{
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cell.colSpan = cell.rowData["span"];
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cell.autoColSpan = true;
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}
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if (cell.colSpan == "all")
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{
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cell.colSpan = cells[y].length;
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}
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var span = cell.colSpan = this._forceNumber(cell.colSpan);
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// Create the element
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var widget = this.createElementFromNode(node, nodeName);
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// Fill all cells the widget is spanning
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for (var i = 0; i < span && x < cells[y].length; i++, x++)
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{
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cell = this._getCell(cells, x, y);
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if (cell.widget == null)
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{
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cell.widget = widget;
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}
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else
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{
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throw("Grid cell collision, two elements " +
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"defined for cell (" + x + "," + y + ")!");
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}
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}
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}
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// If the node is a row, create the widgets which belong into
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// the row
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var x = 0;
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if (nodeName == "row")
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{
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et2_filteredNodeIterator(node, _readRowNode, this);
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}
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else
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{
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_readRowNode.call(this, node, nodeName);
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}
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y++;
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}, this);
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},
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_expandLastCells: function(_cells) {
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var h = _cells.length;
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var w = (h > 0) ? _cells[0].length : 0;
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// Determine the last cell in each row and expand its span value if
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// the span has not been explicitly set.
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for (var y = 0; y < h; y++)
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{
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for (var x = w - 1; x >= 0; x--)
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{
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var cell = _cells[y][x];
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if (cell.widget != null)
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{
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if (cell.autoColSpan)
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{
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cell.colSpan = w - x;
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}
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break;
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}
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}
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}
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// Determine the last cell in each column and expand its span value if
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// the span has not been explicitly set.
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for (var x = 0; x < w; x++)
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{
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for (var y = h - 1; y >= 0; y--)
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{
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var cell = _cells[y][x];
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if (cell.widget != null)
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{
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if (cell.autoRowSpan)
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{
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cell.rowSpan = h - y;
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}
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break;
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}
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}
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}
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},
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/**
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* As the does not fit very well into the default widget structure, we're
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* overwriting the loadFromXML function and doing a two-pass reading -
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* in the first step the
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*/
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loadFromXML: function(_node) {
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// Get the columns and rows tag
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var rowsElems = et2_directChildrenByTagName(_node, "rows");
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var columnsElems = et2_directChildrenByTagName(_node, "columns");
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if (rowsElems.length == 1 && columnsElems.length == 1)
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{
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var columns = columnsElems[0];
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var rows = rowsElems[0];
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var colData = [];
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var rowData = [];
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// Fetch the column and row data
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this._fetchRowColData(columns, rows, colData, rowData);
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// Initialize the cells
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var cells = this._initCells(colData, rowData);
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// Create the widgets inside the cells and read the span values
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this._fillCells(cells, columns, rows);
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// Expand the span values of the last cells
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this._expandLastCells(cells);
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// Create the table rows
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this.createTableFromCells(cells);
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}
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else
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{
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throw("Error while parsing grid, none or multiple rows or columns tags!");
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}
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},
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createTableFromCells: function(_cells) {
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// Set the rowCount and columnCount variables
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var h = this.rowCount = _cells.length;
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var w = this.columnCount = (h > 0) ? _cells[0].length : 0;
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this.managementArray = [];
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this.cells = _cells;
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// Create the table rows.
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for (var y = 0; y < h; y++)
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{
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var row = _cells[y];
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var tr = $j(document.createElement("tr")).appendTo(this.tbody);
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// Create the cells. x is incremented by the colSpan value of the
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// cell.
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for (var x = 0; x < w;)
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{
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// Fetch a cell from the cells
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var cell = this._getCell(_cells, x, y);
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if (cell.td == null && cell.widget != null)
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{
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// Create the cell
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var td = $j(document.createElement("td")).appendTo(tr);
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// Add the entry for the widget to the management array
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this.managementArray.push({
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"cell": td[0],
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"widget": cell.widget
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});
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// Trigger the "onSetParent" event of the widget
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cell.widget.onSetParent();
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// Set the span values of the cell
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var cs = (x == w - 1) ? w - x : Math.min(w - x, cell.colSpan);
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var rs = (y == h - 1) ? h - y : Math.min(h - y, cell.rowSpan);
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// Set the col and row span values
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if (cs > 1) {
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td.attr("colspan", cs);
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}
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if (rs > 1) {
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td.attr("rowspan", rs);
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}
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// Assign the td to the cell
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for (var sx = x; sx < x + cs; sx++)
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{
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for (var sy = y; sy < y + rs; sy++)
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{
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this._getCell(_cells, sx, sy).td = td;
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}
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}
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x += cell.colSpan;
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}
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else
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{
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x++;
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}
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}
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}
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},
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/**
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* The grid needs its own assign function in order to fill the grid
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* accordingly.
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*/
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assign: function(_obj) {
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if (_obj instanceof et2_grid)
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{
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// Remember all widgets which have already been instanciated
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var instances = [];
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// Copy the cells array of the other grid and clone the widgets
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// inside of it
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var cells = new Array(_obj.cells.length);
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for (var y = 0; y < _obj.cells.length; y++)
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{
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cells[y] = new Array(_obj.cells[y].length);
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for (var x = 0; x < _obj.cells[y].length; x++)
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{
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var srcCell = _obj.cells[y][x];
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var widget = null;
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if (srcCell.widget)
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{
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// Search for the widget inside the instances array
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for (var i = 0; i < instances.length; i++)
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{
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if (instances[i].srcWidget == srcCell.widget)
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{
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widget = instances[i].widget;
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break;
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}
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}
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if (widget == null)
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{
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widget = srcCell.widget.clone(this, srcCell.widget.type);
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instances.push({
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"widget": widget,
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"srcWidget": srcCell.widget
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});
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}
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}
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cells[y][x] = {
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"widget": widget,
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"td": null,
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"colSpan": srcCell.colSpan,
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"rowSpan": srcCell.rowSpan
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}
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}
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}
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// Create the table
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this.createTableFromCells(cells);
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// Copy a reference to the content array manager
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if (_obj._mgr)
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{
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this._mgr = _obj._mgr;
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}
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}
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else
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{
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throw("Invalid assign to grid!");
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}
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},
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getDOMNode: function(_sender) {
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// If the parent class functions are asking for the DOM-Node, return the
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// outer table.
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if (_sender == this)
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{
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return this.table[0];
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}
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// Check whether the _sender object exists inside the management array
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for (var i = 0; i < this.managementArray.length; i++)
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{
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if (this.managementArray[i].widget == _sender)
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{
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return this.managementArray[i].cell;
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}
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}
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return null;
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},
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set_id: function(_value) {
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this._super.apply(this, arguments);
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// Check whether a namespace exists for this element
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this.checkCreateNamespace();
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}
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});
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et2_register_widget(et2_grid, ["grid"]);
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