egroupware/etemplate/js/et2_widget_grid.js
Nathan Gray 871f63a9f2 Additional checks on autorepeat fallback
- Better handling of the different accepted indirect placeholders
- Add a check & error to prevent infinite loops (or crazy large grids)
2013-09-10 23:25:51 +00:00

842 lines
20 KiB
JavaScript

/**
* EGroupware eTemplate2 - JS Grid object
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Andreas Stöckel
* @copyright Stylite 2011
* @version $Id$
*/
"use strict";
/*egw:uses
jquery.jquery;
et2_core_DOMWidget;
et2_core_xml;
*/
/**
* Class which implements the "grid" XET-Tag
*
* This also includes repeating the last row in the grid and filling
* it with content data
*
* @augments et2_DOMWidget
*/
var et2_grid = et2_DOMWidget.extend([et2_IDetachedDOM, et2_IAligned],
{
createNamespace: true,
attributes: {
// Better to use CSS, no need to warn about it
"border": {
"ignore": true
},
"align": {
"name": "Align",
"type": "string",
"default": "left",
"description": "Position of this element in the parent hbox"
},
"spacing": {
"ignore": true
},
"padding": {
"ignore": true
},
"sortable": {
"name": "Sortable callback",
"type": "string",
"default": et2_no_init,
"description": "PHP function called when user sorts the grid. Setting this enables sorting the grid rows. The callback will be passed the ID of the grid and the new order of the rows."
}
},
/**
* Constructor
*
* @memberOf et2_grid
*/
init: function() {
// Create the table body and the table
this.tbody = $j(document.createElement("tbody"));
this.table = $j(document.createElement("table"))
.addClass("et2_grid");
this.table.append(this.tbody);
// Call the parent constructor
this._super.apply(this, arguments);
// Counters for rows and columns
this.rowCount = 0;
this.columnCount = 0;
// 2D-Array which holds references to the DOM td tags
this.cells = [];
this.rowData = [];
this.colData = [];
this.managementArray = [];
},
destroy: function() {
this._super.call(this, arguments);
},
_initCells: function(_colData, _rowData) {
// Copy the width and height
var w = _colData.length;
var h = _rowData.length;
// Create the 2D-Cells array
var cells = new Array(h);
for (var y = 0; y < h; y++)
{
cells[y] = new Array(w);
// Initialize the cell description objects
for (var x = 0; x < w; x++)
{
cells[y][x] = {
"td": null,
"widget": null,
"colData": _colData[x],
"rowData": _rowData[y],
"disabled": _colData[x].disabled || _rowData[y].disabled,
"class": _colData[x]["class"],
"colSpan": 1,
"autoColSpan": false,
"rowSpan": 1,
"autoRowSpan": false,
"width": _colData[x].width,
"x": x,
"y": y
};
}
}
return cells;
},
_getColDataEntry: function() {
return {
"width": "auto",
"class": "",
"align": "",
"span": "1",
"disabled": false
};
},
_getRowDataEntry: function() {
return {
"height": "auto",
"class": "",
"valign": "top",
"span": "1",
"disabled": false
};
},
_getCell: function(_cells, _x, _y) {
if ((0 <= _y) && (_y < _cells.length))
{
var row = _cells[_y];
if ((0 <= _x) && (_x < row.length))
{
return row[_x];
}
}
throw("Error while accessing grid cells, invalid element count or span value!");
},
_forceNumber: function(_val) {
if (isNaN(_val))
{
throw(_val + " is not a number!");
}
return parseInt(_val);
},
_fetchRowColData: function(columns, rows, colData, rowData) {
// Parse the columns tag
et2_filteredNodeIterator(columns, function(node, nodeName) {
var colDataEntry = this._getColDataEntry();
colDataEntry["disabled"] = this.getArrayMgr("content")
.parseBoolExpression(et2_readAttrWithDefault(node, "disabled", ""));
if (nodeName == "column")
{
colDataEntry["width"] = et2_readAttrWithDefault(node, "width", "auto");
colDataEntry["class"] = et2_readAttrWithDefault(node, "class", "");
colDataEntry["align"] = et2_readAttrWithDefault(node, "align", "");
colDataEntry["span"] = et2_readAttrWithDefault(node, "span", "1");
}
else
{
colDataEntry["span"] = "all";
}
colData.push(colDataEntry);
}, this);
// Parse the rows tag
et2_filteredNodeIterator(rows, function(node, nodeName) {
var rowDataEntry = this._getRowDataEntry();
rowDataEntry["disabled"] = this.getArrayMgr("content")
.parseBoolExpression(et2_readAttrWithDefault(node, "disabled", ""));
if (nodeName == "row")
{
// Remember this row for auto-repeat - it'll eventually be the last one
this.lastRowNode = node;
rowDataEntry["height"] = et2_readAttrWithDefault(node, "height", "auto");
rowDataEntry["class"] = et2_readAttrWithDefault(node, "class", "");
rowDataEntry["valign"] = et2_readAttrWithDefault(node, "valign", "");
rowDataEntry["span"] = et2_readAttrWithDefault(node, "span", "1");
var id = et2_readAttrWithDefault(node, "id", "");
if(id)
{
rowDataEntry["id"] = id;
}
}
else
{
rowDataEntry["span"] = "all";
}
rowData.push(rowDataEntry);
}, this);
// Add in repeated rows
// TODO: It would be nice if we could skip header (thead) & footer (tfoot) or treat them separately
if(this.getArrayMgr("content"))
{
var content = this.getArrayMgr("content");
var rowDataEntry = rowData[rowData.length-1];
var rowIndex = rowData.length-1;
// Find out if we have any content rows, and how many
var cont = true;
while(cont)
{
if(content.data[rowIndex])
{
rowData[rowIndex] = jQuery.extend({}, rowDataEntry);
rowIndex++;
}
else if (this.lastRowNode != null)
{
// Have to look through actual widgets to support const[$row]
// style names - should be avoided so we can remove this extra check
// Old etemplate checked first two widgets, or first two box children
// This cannot be done inside a nextmatch - nm will do the expansion later
var nm = false;
var widget = this;
while(!nm && widget != this.getRoot())
{
nm = (widget._type == 'nextmatch');
widget = widget.getParent();
}
if(nm)
{
// No further checks for repeated rows
break;
}
// Not in a nextmatch, so we can expand with abandon
var currentPerspective = jQuery.extend({},content.perspectiveData);
var check = function(node, nodeName)
{
if(nodeName == 'box' || nodeName == 'hbox' || nodeName == 'vbox')
{
return et2_filteredNodeIterator(node, check, this);
}
content.perspectiveData.row = rowIndex;
for(var attr in node.attributes)
{
var value = et2_readAttrWithDefault(node, node.attributes[attr].name, "");
// Don't include first char, those should be handled by normal means
// and it would break nextmatch
if(value.indexOf('@') > 0 || value.indexOf('$') > 0)
{
// Ok, we found something. How many? Check for values.
var ident = content.expandName(value);
// expandName() handles index into content (@), but we have to look up
// regular values
if(value.indexOf('@') < 0)
{
// Returns null if there isn't an actual value
ident = content.getEntry(ident,false,true);
}
while(ident != null && rowIndex < 1000)
{
rowData[rowIndex] = jQuery.extend({}, rowDataEntry);
content.perspectiveData.row = ++rowIndex;
ident = content.expandName(value);
if(value.indexOf('@') < 0)
{
// Returns null if there isn't an actual value
ident = content.getEntry(ident,false,true);
}
}
if(rowIndex >= 1000)
{
egw.debug("error", "Problem in autorepeat fallback: too many rows for '%s'. Use a nextmatch, or start debugging.",value);
}
return;
}
}
};
et2_filteredNodeIterator(this.lastRowNode, check,this);
cont = false;
content.perspectiveData = currentPerspective;
}
else
{
// No more rows, stop
break;
}
}
}
if(rowIndex <= rowData.length - 1)
{
// No auto-repeat
this.lastRowNode = null;
}
},
_fillCells: function(cells, columns, rows) {
var h = cells.length;
var w = (h > 0) ? cells[0].length : 0;
var currentPerspective = this.getArrayMgr("content").perspectiveData;
// Read the elements inside the columns
var x = 0;
et2_filteredNodeIterator(columns, function(node, nodeName) {
function _readColNode(node, nodeName) {
if (y >= h)
{
this.egw().debug("warn", "Skipped grid cell in column, '" +
nodeName + "'");
return;
}
var cell = this._getCell(cells, x, y);
// Read the span value of the element
if (node.getAttribute("span"))
{
cell.rowSpan = node.getAttribute("span");
}
else
{
cell.rowSpan = cell.colData["span"];
cell.autoRowSpan = true;
}
if (cell.rowSpan == "all")
{
cell.rowSpan = cells.length;
}
var span = cell.rowSpan = this._forceNumber(cell.rowSpan);
// Create the widget
var widget = this.createElementFromNode(node, nodeName);
// Fill all cells the widget is spanning
for (var i = 0; i < span && y < cells.length; i++, y++)
{
this._getCell(cells, x, y).widget = widget;
}
};
// If the node is a column, create the widgets which belong into
// the column
var y = 0;
if (nodeName == "column")
{
et2_filteredNodeIterator(node, _readColNode, this);
}
else
{
_readColNode.call(this, node, nodeName);
}
x++;
}, this);
// Read the elements inside the rows
var y = 0;
var x = 0;
var readRowNode;
et2_filteredNodeIterator(rows, function(node, nodeName) {
readRowNode = function _readRowNode(node, nodeName) {
if (x >= w)
{
if(nodeName != "description")
{
// Only notify it skipping other than description,
// description used to pad
this.egw().debug("warn", "Skipped grid cell in row, '" +
nodeName + "'");
}
return;
}
var cell = this._getCell(cells, x, y);
// Read the span value of the element
if (node.getAttribute("span"))
{
cell.colSpan = node.getAttribute("span");
}
else
{
cell.colSpan = cell.rowData["span"];
cell.autoColSpan = true;
}
if (cell.colSpan == "all")
{
cell.colSpan = cells[y].length;
}
var span = cell.colSpan = this._forceNumber(cell.colSpan);
// Read the align value of the element
if (node.getAttribute("align"))
{
cell.align = node.getAttribute("align");
}
// Apply widget's class to td, for backward compatability
if(node.getAttribute("class"))
{
cell.class += (cell.class ? " " : "") + node.getAttribute("class");
}
// Create the element
if(!cell.disabled)
{
var widget = this.createElementFromNode(node, nodeName);
}
// Fill all cells the widget is spanning
for (var i = 0; i < span && x < cells[y].length; i++, x++)
{
cell = this._getCell(cells, x, y);
if (cell.widget == null)
{
cell.widget = widget;
}
else
{
throw("Grid cell collision, two elements " +
"defined for cell (" + x + "," + y + ")!");
}
}
};
// If the node is a row, create the widgets which belong into
// the row
x = 0;
if(this.lastRowNode && node == this.lastRowNode)
{
return;
}
if (nodeName == "row")
{
// Adjust for the row
for(var name in this.getArrayMgrs())
{
//this.getArrayMgr(name).perspectiveData.row = y;
}
if(this._getCell(cells, x,y).rowData.id)
{
this.getArrayMgr("content").expandName(this.rowData[y].id);
}
// If row disabled, just skip it
var disabled = false;
if(node.getAttribute("disabled") == "1")
{
disabled = true;
}
if(!disabled)
{
et2_filteredNodeIterator(node, readRowNode, this);
}
}
else
{
readRowNode.call(this, node, nodeName);
}
y++;
}, this);
// Extra content rows
for(y; y < h; y++) {
var x = 0;
// Adjust for the row
var mgrs = this.getArrayMgrs();
for(var name in mgrs)
{
this.getArrayMgr(name).perspectiveData.row = y;
}
if(this._getCell(cells, x, y).rowData.id)
{
this._getCell(cells, x, y).rowData.id = this.getArrayMgr("content").expandName(this._getCell(cells, x, y).rowData.id);
}
if(this._getCell(cells, x, y).rowData.class)
{
this._getCell(cells, x, y).rowData.class = this.getArrayMgr("content").expandName(this._getCell(cells, x, y).rowData.class);
}
et2_filteredNodeIterator(this.lastRowNode, readRowNode, this);
}
// Reset
for(var name in this.getArrayMgrs())
{
this.getArrayMgr(name).perspectiveData = currentPerspective;
}
},
_expandLastCells: function(_cells) {
var h = _cells.length;
var w = (h > 0) ? _cells[0].length : 0;
// Determine the last cell in each row and expand its span value if
// the span has not been explicitly set.
for (var y = 0; y < h; y++)
{
for (var x = w - 1; x >= 0; x--)
{
var cell = _cells[y][x];
if (cell.widget != null)
{
if (cell.autoColSpan)
{
cell.colSpan = w - x;
}
break;
}
}
}
// Determine the last cell in each column and expand its span value if
// the span has not been explicitly set.
for (var x = 0; x < w; x++)
{
for (var y = h - 1; y >= 0; y--)
{
var cell = _cells[y][x];
if (cell.widget != null)
{
if (cell.autoRowSpan)
{
cell.rowSpan = h - y;
}
break;
}
}
}
},
/**
* As the does not fit very well into the default widget structure, we're
* overwriting the loadFromXML function and doing a two-pass reading -
* in the first step the
*/
loadFromXML: function(_node) {
// Get the columns and rows tag
var rowsElems = et2_directChildrenByTagName(_node, "rows");
var columnsElems = et2_directChildrenByTagName(_node, "columns");
if (rowsElems.length == 1 && columnsElems.length == 1)
{
var columns = columnsElems[0];
var rows = rowsElems[0];
var colData = [];
var rowData = [];
// Fetch the column and row data
this._fetchRowColData(columns, rows, colData, rowData);
// Initialize the cells
var cells = this._initCells(colData, rowData);
// Create the widgets inside the cells and read the span values
this._fillCells(cells, columns, rows);
// Expand the span values of the last cells
this._expandLastCells(cells);
// Create the table rows
this.createTableFromCells(cells, colData, rowData);
}
else
{
throw("Error while parsing grid, none or multiple rows or columns tags!");
}
},
createTableFromCells: function(_cells, _colData, _rowData) {
this.managementArray = [];
this.cells = _cells;
this.colData = _colData;
this.rowData = _rowData;
// Set the rowCount and columnCount variables
var h = this.rowCount = _cells.length;
var w = this.columnCount = (h > 0) ? _cells[0].length : 0;
// Create the table rows.
for (var y = 0; y < h; y++)
{
var row = _cells[y];
var tr = $j(document.createElement("tr")).appendTo(this.tbody)
.addClass(this.rowData[y]["class"]);
if (this.rowData[y].disabled)
{
tr.hide();
}
if (this.rowData[y].height != "auto")
{
tr.height(this.rowData[y].height);
}
if (this.rowData[y].valign)
{
tr.attr("valign", this.rowData[y].valign);
}
if(this.rowData[y].id)
{
tr.attr("id", this.rowData[y].id);
}
// Create the cells. x is incremented by the colSpan value of the
// cell.
for (var x = 0; x < w;)
{
// Fetch a cell from the cells
var cell = this._getCell(_cells, x, y);
if (cell.td == null && cell.widget != null)
{
// Create the cell
var td = $j(document.createElement("td")).appendTo(tr)
.addClass(cell["class"]);
if (cell.disabled)
{
td.hide();
cell.widget.options = cell.disabled;
}
if (cell.width != "auto")
{
td.width(cell.width);
}
if (cell.align)
{
td.attr("align",cell.align);
}
// Add the entry for the widget to the management array
this.managementArray.push({
"cell": td[0],
"widget": cell.widget,
"disabled": cell.disabled
});
// Set the span values of the cell
var cs = (x == w - 1) ? w - x : Math.min(w - x, cell.colSpan);
var rs = (y == h - 1) ? h - y : Math.min(h - y, cell.rowSpan);
// Set the col and row span values
if (cs > 1) {
td.attr("colspan", cs);
}
if (rs > 1) {
td.attr("rowspan", rs);
}
// Assign the td to the cell
for (var sx = x; sx < x + cs; sx++)
{
for (var sy = y; sy < y + rs; sy++)
{
this._getCell(_cells, sx, sy).td = td;
}
}
x += cell.colSpan;
}
else
{
x++;
}
}
}
},
getDOMNode: function(_sender) {
// If the parent class functions are asking for the DOM-Node, return the
// outer table.
if (_sender == this || typeof _sender == 'undefined')
{
return this.table[0];
}
// Check whether the _sender object exists inside the management array
for (var i = 0; i < this.managementArray.length; i++)
{
if (this.managementArray[i].widget == _sender)
{
return this.managementArray[i].cell;
}
}
return null;
},
isInTree: function(_sender) {
var vis = true;
if (typeof _sender != "undefined" && _sender != this)
{
vis = false;
// Check whether the _sender object exists inside the management array
for (var i = 0; i < this.managementArray.length; i++)
{
if (this.managementArray[i].widget == _sender)
{
vis = !(this.managementArray[i].disabled);
break;
}
}
}
return this._super(this, vis);
},
set_align: function(_value) {
this.align = _value;
},
get_align: function(_value) {
return this.align;
},
/**
* Sortable allows you to reorder grid rows using the mouse.
* The new order is returned as part of the value of the
* grid, in 'sort_order'.
*
* @param {boolean|function} sortable Callback or false to disable
*/
set_sortable: function(sortable) {
if(!sortable)
{
this.tbody.sortable("destroy");
return;
}
// Make sure rows have IDs, so sortable has something to return
$j('tr', this.tbody).each(function(index) {
var $this = $j(this);
// Header does not participate in sorting
if($this.hasClass('th')) return;
// If row doesn't have an ID, assign the index as ID
if(!$this.attr("id")) $this.attr("id", index);
});
var self = this;
// Set up sortable
this.tbody.sortable({
// Header does not participate in sorting
items: "tr:not(.th)",
distance: 15,
stop: function(event, ui) {
self.egw().jsonq(sortable,[self.id, self.tbody.sortable("toArray")],
null,
self
);
}
});
},
/**
* Override parent to apply actions on each row
*
* @param Object[ {ID: attributes..}+] as for set_actions
*/
_link_actions: function(actions)
{
// Get the top level element for the tree
var objectManager = egw_getAppObjectManager(true);
var widget_object = objectManager.getObjectById(this.id);
if (widget_object == null) {
// Add a new container to the object manager which will hold the widget
// objects
widget_object = objectManager.insertObject(false, new egwActionObject(
this.id, objectManager, new et2_action_object_impl(this),
objectManager.manager.getActionById(this.id) || objectManager.manager
));
}
// Delete all old objects
widget_object.clear();
// Go over the widget & add links - this is where we decide which actions are
// 'allowed' for this widget at this time
var action_links = this._get_action_links(actions);
// Deal with each row
for(var i = 0; i < this.rowData.length; i++)
{
// Add a new action object to the object manager
var aoi = new et2_action_object_impl(this);
var row = $j('tr', this.tbody)[i];
aoi.doGetDOMNode = function() { return row;};
var obj = widget_object.addObject("row_"+i, aoi);
obj.updateActionLinks(action_links);
}
},
/**
* Code for implementing et2_IDetachedDOM
* This doesn't need to be implemented.
* Individual widgets are detected and handled by the grid, but the interface is needed for this to happen
*/
getDetachedAttributes: function(_attrs) {
},
getDetachedNodes: function() {
return [this.getDOMNode()];
},
setDetachedAttributes: function(_nodes, _values) {
}
});
et2_register_widget(et2_grid, ["grid"]);