egroupware/etemplate/js/et2_dataview_view_gridContainer.js
2011-10-04 21:45:54 +00:00

550 lines
13 KiB
JavaScript

/**
* eGroupWare eTemplate2 - Class which generates the outer container for the grid
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage dataview
* @link http://www.egroupware.org
* @author Andreas Stöckel
* @copyright Stylite 2011
* @version $Id$
*/
"use strict"
/*egw:uses
jquery.jquery;
et2_core_common;
et2_core_stylesheet;
et2_dataview_view_grid;
et2_dataview_view_resizeable;
*/
/**
* Base view class which is responsible for displaying a grid view element.
*/
var et2_dataview_gridContainer = Class.extend({
/**
* Constant which regulates the column padding.
*/
columnPadding: 2,
/**
* Some browser dependant variables which will be calculated on creation of
* the first gridContainer object.
*/
scrollbarWidth: false,
headerBorderWidth: false,
columnBorderWidth: false,
/**
* Hooks to allow parent to keep up to date if things change
*/
onUpdateColumns: false,
selectColumnsClick: false,
/**
* Constructor for the grid container
* @param object _parentNode is the DOM-Node into which the grid view will be inserted
*/
init: function(_parentNode, _dataProvider) {
// Copy the arguments
this.parentNode = $j(_parentNode);
this.dataProvider = _dataProvider;
// Initialize some variables
this.columnNodes = []; // Array with the header containers
this.columns = [];
this.columnMgr = null;
this.rowProvider = null;
this.grid = null;
this.width = 0;
this.height = 0;
this.uniqueId = "gridCont_" + et2_uniqueId();
// Build the base nodes
this._createElements();
// Read the browser dependant variables
this._getDepVars();
},
/**
* Destroys the object, removes all dom nodes and clears all references.
*/
destroy: function() {
// Clear the columns
this._clearHeader();
// Free the grid
if (this.grid)
{
this.grid.free();
}
// Free the row provider
if (this.rowProvider)
{
this.rowProvider.free();
}
// Detatch the outer element
this.table.remove();
},
/**
* Clears all data rows and reloads them
*/
clear: function() {
if (this.grid)
{
this.grid.clear();
}
},
/**
* Returns the column container node for the given column index
*
* @param _columnIdx the integer column index
*/
getHeaderContainerNode: function(_columnIdx) {
if (typeof this.columnNodes[_columnIdx] != "undefined")
{
return this.columnNodes[_columnIdx].container[0];
}
return null;
},
/**
* Sets the column descriptors and creates the column header according to it.
* The inner grid will be emptied if it has already been built.
*/
setColumns: function(_columnData) {
// Free all column objects which have been created till this moment
this._clearHeader();
// Copy the given column data
this.columnMgr = new et2_dataview_columns(_columnData);
// Create the stylesheets
this.updateColumns();
// Build the header row
this._buildHeader();
// Build the grid
this._buildGrid();
},
/**
* Resizes the grid
*/
resize: function(_w, _h) {
if (this.width != _w)
{
this.width = _w;
// Rebuild the column stylesheets
this.columnMgr.setTotalWidth(_w - this.scrollbarWidth);
this._updateColumns();
}
if (this.height != _h)
{
this.height = _h;
// Set the height of the grid.
if (this.grid)
{
this.grid.setScrollHeight(this.height -
this.headTr.outerHeight(true));
}
}
},
/**
* Returns the column manager object. You can use it to set the visibility
* of columns etc. Call "updateHeader" if you did any changes.
*/
getColumnMgr: function() {
return this.columnMgr;
},
/**
* Recalculates the stylesheets which determine the column visibility and
* width.
*
* @param setDefault boolean Allow admins to save current settings as default for all users
*/
updateColumns: function(setDefault) {
if (this.columnMgr)
{
this._updateColumns();
}
// Ability to notify parent / someone else
if (this.onUpdateColumns)
{
this.onUpdateColumns(setDefault);
}
},
/* --- PRIVATE FUNCTIONS --- */
/* --- Code for building the grid container DOM-Tree elements ---- */
/**
* Builds the base DOM-Tree elements
*/
_createElements: function() {
/*
Structure:
<table class="egwGridView_outer">
<thead>
<tr> [HEAD] </tr>
</thead>
<tbody>
<tr> [GRID CONTAINER] </tr>
</tbody>
</table>
*/
this.containerTr = $j(document.createElement("tr"));
this.headTr = $j(document.createElement("tr"));
this.thead = $j(document.createElement("thead"))
.append(this.headTr);
this.tbody = $j(document.createElement("tbody"))
.append(this.containerTr);
this.table = $j(document.createElement("table"))
.addClass("egwGridView_outer")
.append(this.thead, this.tbody)
.appendTo(this.parentNode);
},
/* --- Code for building the header row --- */
/**
* Clears the header row
*/
_clearHeader: function() {
if (this.columnMgr)
{
this.columnMgr.free();
this.columnMgr = null;
}
// Reset the headerColumns array and empty the table row
this.columnNodes = [];
this.columns = [];
this.headTr.empty();
},
/**
* Sets the column data which is retrieved by calling egwGridColumns.getColumnData.
* The columns will be updated.
*/
_updateColumns: function() {
// Get the stylesheet singleton
var styleSheet = new et2_dynStyleSheet();
// Copy the columns data
this.columns = this.columnMgr.getColumnData();
// Count the visible rows
var total_cnt = 0;
for (var i = 0; i < this.columns.length; i++)
{
if (this.columns[i].visible)
{
total_cnt++;
}
}
// Set the grid column styles
var first = true;
var vis_col = this.visibleColumnCount = 0;
var totalWidth = 0;
for (var i = 0; i < this.columns.length; i++)
{
var col = this.columns[i];
col.tdClass = this.uniqueId + "_td_" + col.id;
col.divClass = this.uniqueId + "_div_" + col.id;
if (col.visible)
{
vis_col++;
this.visibleColumnCount++;
// Update the visibility of the column
styleSheet.updateRule("." + col.tdClass,
"display: table-cell; " +
((vis_col == total_cnt) ? "border-right-width: 0 " : "border-right-width: 1px ") +
"!important;");
// Ugly browser dependant code - each browser seems to treat the
// right (collapsed) border of the row differently
var subBorder = 0;
var subHBorder = 0;
if ($j.browser.mozilla)
{
var maj = $j.browser.version.split(".")[0];
if (maj < 2) {
subBorder = 1; // Versions <= FF 3.6
}
}
if ($j.browser.webkit)
{
if (!first)
{
subBorder = 1;
}
subHBorder = 1;
}
if (($j.browser.msie || $j.browser.opera) && first)
{
subBorder = -1;
}
// Make the last columns one pixel smaller, to prevent a horizontal
// scrollbar from showing up
if (vis_col == total_cnt)
{
subBorder += 1;
}
// Write the width of the header columns
var headerWidth = Math.max(0, (col.width - this.headerBorderWidth - subHBorder));
styleSheet.updateRule(".egwGridView_outer ." + col.divClass,
"width: " + headerWidth + "px;");
// Write the width of the body-columns
var columnWidth = Math.max(0, (col.width - this.columnBorderWidth - subBorder));
styleSheet.updateRule(".egwGridView_grid ." + col.divClass,
"width: " + columnWidth + "px;");
totalWidth += col.width;
first = false;
}
else
{
styleSheet.updateRule("." + col.tdClass, "display: none;");
}
}
// Add the full row and spacer class
styleSheet.updateRule(".egwGridView_grid ." + this.uniqueId + "_div_fullRow",
"width: " + (totalWidth - this.columnBorderWidth - 1) + "px; border-right-width: 0 !important;");
styleSheet.updateRule(".egwGridView_outer ." + this.uniqueId + "_spacer_fullRow",
"width: " + (totalWidth - 1) + "px; border-right-width: 0 !important;");
},
/**
* Builds the containers for the header row
*/
_buildHeader: function() {
var self = this;
var handler = function(event) {
}
for (var i = 0; i < this.columns.length; i++)
{
var col = this.columns[i];
// Create the column header and the container element
var cont = $j(document.createElement("div"))
.addClass("innerContainer")
.addClass(col.divClass);
var column = $j(document.createElement("th"))
.addClass(col.tdClass)
.append(cont)
.appendTo(this.headTr);
// Every column but last can be resized // TODO: This won't work as the last column could be hidden
if(i < this.columns.length-1) {
var enc_column = self.columnMgr.getColumnById(col.id);
et2_dataview_makeResizeable(column, function(_w) {
this.set_width(_w + "px");
self.columnMgr.updated = true;
self.updateColumns();
}, enc_column);
}
// Store both nodes in the columnNodes array
this.columnNodes.push({
"column": column,
"container": cont
});
}
this._buildSelectCol();
},
/**
* Builds the select cols column
*/
_buildSelectCol: function() {
// Build the "select columns" icon
this.selectColIcon = $j(document.createElement("span"))
.addClass("selectcols")
// Build the option column
this.selectCol = $j(document.createElement("th"))
.addClass("optcol")
.append(this.selectColIcon)
// Toggle display of option popup
.click(this, function(e) {if(e.data.selectColumnsClick) e.data.selectColumnsClick(e)})
.appendTo(this.headTr);
this.selectCol.css("width", this.scrollbarWidth - this.selectCol.outerWidth()
+ this.selectCol.width() + 1);
},
/**
* Builds the inner grid class
*/
_buildGrid: function() {
// Create the collection of column ids
var colIds = new Array(this.columns.length);
for (var i = 0; i < this.columns.length; i++)
{
colIds[i] = this.columns[i].id;
}
// Create the row provider
if (this.rowProvider)
{
this.rowProvider.free();
}
this.rowProvider = new et2_dataview_rowProvider(this.uniqueId, colIds);
// Create the grid class and pass "19" as the starting average row height
this.grid = new et2_dataview_grid(null, this.uniqueId, colIds,
this.dataProvider, this.rowProvider, 19);
// Insert the grid into the DOM-Tree
this.containerTr.append(this.grid.getJNode());
},
/* --- Code for calculating the browser/css depending widths --- */
/**
* Reads the browser dependant variables
*/
_getDepVars: function() {
if (this.scrollbarWidth === false)
{
// Clone the table and attach it to the outer body tag
var clone = this.table.clone();
$j(window.top.document.getElementsByTagName("body")[0])
.append(clone);
// Read the scrollbar width
this.scrollbarWidth = this.constructor.prototype.scrollbarWidth =
this._getScrollbarWidth(clone);
// Read the header border width
this.headerBorderWidth = this.constructor.prototype.headerBorderWidth =
this._getHeaderBorderWidth(clone);
// Read the column border width
this.columnBorderWidth = this.constructor.prototype.columnBorderWidth =
this._getColumnBorderWidth(clone);
// Remove the cloned DOM-Node again from the outer body
clone.remove();
}
},
/**
* Reads the scrollbar width
*/
_getScrollbarWidth: function(_table) {
// Create a temporary td and two divs, which are inserted into the
// DOM-Tree. The outer div has a fixed size and "overflow" set to auto.
// When the second div is inserted, it will be forced to display a scrollbar.
var div_inner = $j(document.createElement("div"))
.css("height", "1000px");
var div_outer = $j(document.createElement("div"))
.css("height", "100px")
.css("width", "100px")
.css("overflow", "auto")
.append(div_inner);
var td = $j(document.createElement("td"))
.append(div_outer);
// Store the scrollbar width statically.
$j("tbody tr", _table).append(td);
var width = Math.max(10, div_outer.outerWidth() - div_inner.outerWidth());
// Remove the elements again
div_outer.remove();
return width;
},
/**
* Calculates the total width of the header column border
*/
_getHeaderBorderWidth: function(_table) {
// Create a temporary th which is appended to the outer thead row
var cont = $j(document.createElement("div"))
.addClass("innerContainer");
var th = $j(document.createElement("th"))
.append(cont);
// Insert the th into the document tree
$j("thead tr", _table).append(th);
// Calculate the total border width
var width = th.outerWidth(true) - cont.width();
// Remove the appended element again
th.remove();
return width;
},
/**
* Calculates the total width of the column border
*/
_getColumnBorderWidth : function(_table) {
// Create a temporary th which is appended to the outer thead row
var cont = $j(document.createElement("div"))
.addClass("innerContainer");
var td = $j(document.createElement("td"))
.append(cont);
// Insert the th into the document tree
$j("tbody tr", _table).append(td);
// Calculate the total border width
_table.addClass("egwGridView_grid");
var width = td.outerWidth(true) - cont.width();
// Remove the appended element again
td.remove();
return width;
}
});