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/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2006 STZ-IDA, Germany, http://www.stz-ida.de
License:
LGPL: http://www.gnu.org/licenses/lgpl.html
EPL: http://www.eclipse.org/org/documents/epl-v10.php
See the LICENSE file in the project's top-level directory for details.
Authors:
* Til Schneider (til132)
************************************************************************ */
/* ************************************************************************
#module(ui_table)
************************************************************************ */
/**
* The table pane that shows a certain section from a table. This class handles
* the display of the data part of a table and is therefore the base for virtual
* scrolling.
*
* @param paneScroller {TablePaneScroller} the TablePaneScroller the header belongs to.
*/
qx.OO.defineClass("qx.ui.table.TablePane", qx.ui.basic.Terminator,
function(paneScroller) {
qx.ui.basic.Terminator.call(this);
this._paneScroller = paneScroller;
// this.debug("USE_ARRAY_JOIN:" + qx.ui.table.TablePane.USE_ARRAY_JOIN + ", USE_TABLE:" + qx.ui.table.TablePane.USE_TABLE);
this._lastColCount = 0;
this._lastRowCount = 0;
});
/** The index of the first row to show. */
qx.OO.addProperty({ name:"firstVisibleRow", type:"number", defaultValue:0 });
/** The number of rows to show. */
qx.OO.addProperty({ name:"visibleRowCount", type:"number", defaultValue:0 });
// property modifier
qx.Proto._modifyFirstVisibleRow = function(propValue, propOldValue, propData) {
this._updateContent();
return true;
}
// property modifier
qx.Proto._modifyVisibleRowCount = function(propValue, propOldValue, propData) {
this._updateContent();
return true;
}
// overridden
qx.Proto._afterAppear = function() {
qx.ui.basic.Terminator.prototype._afterAppear.call(this);
if (this._updateWantedWhileInvisible) {
// We are visible now and an update was wanted while we were invisible
// -> Do the update now
this._updateContent();
this._updateWantedWhileInvisible = false;
}
};
/**
* Returns the TablePaneScroller this pane belongs to.
*
* @return {TablePaneScroller} the TablePaneScroller.
*/
qx.Proto.getPaneScroller = function() {
return this._paneScroller;
};
/**
* Returns the table this pane belongs to.
*
* @return {Table} the table.
*/
qx.Proto.getTable = function() {
return this._paneScroller.getTable();
};
/**
* Sets the currently focused cell.
*
* @param col {Integer} the model index of the focused cell's column.
* @param row {Integer} the model index of the focused cell's row.
* @param massUpdate {Boolean ? false} Whether other updates are planned as well.
* If true, no repaint will be done.
*/
qx.Proto.setFocusedCell = function(col, row, massUpdate) {
if (col != this._focusedCol || row != this._focusedRow) {
var oldCol = this._focusedCol;
var oldRow = this._focusedRow;
this._focusedCol = col;
this._focusedRow = row;
// Update the focused row background
if (row != oldRow && !massUpdate) {
// NOTE: Only the old and the new row need update
this._updateContent(false, oldRow, true);
this._updateContent(false, row, true);
}
}
}
/**
* Event handler. Called when the selection has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onSelectionChanged = function(evt) {
this._updateContent(false, null, true);
}
/**
* Event handler. Called when the table gets or looses the focus.
*
* @param evt {Map} the event.
*/
qx.Proto._onFocusChanged = function(evt) {
this._updateContent(false, null, true);
};
/**
* Event handler. Called when the width of a column has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onColWidthChanged = function(evt) {
this._updateContent(true);
}
/**
* Event handler. Called the column order has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onColOrderChanged = function(evt) {
this._updateContent(true);
}
/**
* Event handler. Called when the pane model has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onPaneModelChanged = function(evt) {
this._updateContent(true);
}
/**
* Event handler. Called when the table model data has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onTableModelDataChanged = function(evt) {
var data = evt.getData ? evt.getData() : null;
var firstRow = this.getFirstVisibleRow();
var rowCount = this.getVisibleRowCount();
if (data == null || data.lastRow == -1
|| data.lastRow >= firstRow && data.firstRow < firstRow + rowCount)
{
// The change intersects this pane
this._updateContent();
}
}
/**
* Event handler. Called when the table model meta data has changed.
*
* @param evt {Map} the event.
*/
qx.Proto._onTableModelMetaDataChanged = function(evt) {
this._updateContent();
}
/**
* Updates the content of the pane.
*
* @param completeUpdate {Boolean ? false} if true a complete update is performed.
* On a complete update all cell widgets are recreated.
* @param onlyRow {Integer ? null} if set only the specified row will be updated.
* @param onlySelectionOrFocusChanged {Boolean ? false} if true, cell values won't
* be updated. Only the row background will.
*/
qx.Proto._updateContent = function(completeUpdate, onlyRow,
onlySelectionOrFocusChanged)
{
if (! this.isSeeable()) {
this._updateWantedWhileInvisible = true;
return;
}
if (qx.ui.table.TablePane.USE_ARRAY_JOIN) {
this._updateContent_array_join(completeUpdate, onlyRow, onlySelectionOrFocusChanged);
} else {
this._updateContent_orig(completeUpdate, onlyRow, onlySelectionOrFocusChanged);
}
}
/**
* Updates the content of the pane (implemented using array joins).
*
* @param completeUpdate {Boolean ? false} if true a complete update is performed.
* On a complete update all cell widgets are recreated.
* @param onlyRow {Integer ? null} if set only the specified row will be updated.
* @param onlySelectionOrFocusChanged {Boolean ? false} if true, cell values won't
* be updated. Only the row background will.
*/
qx.Proto._updateContent_array_join = function(completeUpdate, onlyRow,
onlySelectionOrFocusChanged)
{
var TablePane = qx.ui.table.TablePane;
var table = this.getTable();
var selectionModel = table.getSelectionModel();
var tableModel = table.getTableModel();
var columnModel = table.getTableColumnModel();
var paneModel = this.getPaneScroller().getTablePaneModel();
var rowRenderer = table.getDataRowRenderer();
var colCount = paneModel.getColumnCount();
var rowHeight = table.getRowHeight();
var firstRow = this.getFirstVisibleRow();
var rowCount = this.getVisibleRowCount();
var modelRowCount = tableModel.getRowCount();
if (firstRow + rowCount > modelRowCount) {
rowCount = Math.max(0, modelRowCount - firstRow);
}
var cellInfo = { table:table };
cellInfo.styleHeight = rowHeight;
var htmlArr = [];
var rowWidth = paneModel.getTotalWidth();
if (TablePane.USE_TABLE) {
// The table test
htmlArr.push('<table cellspacing\="0" cellpadding\="0" style\="table-layout:fixed;font-family:');
htmlArr.push(qx.ui.table.TablePane.CONTENT_ROW_FONT_FAMILY_TEST);
htmlArr.push(';font-size:');
htmlArr.push(qx.ui.table.TablePane.CONTENT_ROW_FONT_SIZE_TEST);
htmlArr.push(';width:');
htmlArr.push(rowWidth);
htmlArr.push('px"><colgroup>');
for (var x = 0; x < colCount; x++) {
var col = paneModel.getColumnAtX(x);
htmlArr.push('<col width="');
htmlArr.push(columnModel.getColumnWidth(col));
htmlArr.push('"/>');
}
htmlArr.push('</colgroup><tbody>');
}
tableModel.prefetchRows(firstRow, firstRow + rowCount - 1);
for (var y = 0; y < rowCount; y++) {
var row = firstRow + y;
cellInfo.row = row;
cellInfo.selected = selectionModel.isSelectedIndex(row);
cellInfo.focusedRow = (this._focusedRow == row);
cellInfo.rowData = tableModel.getRowData(row);
// Update this row
if (TablePane.USE_TABLE) {
htmlArr.push('<tr style\="height:');
htmlArr.push(rowHeight);
} else {
htmlArr.push('<div style\="position:absolute;left:0px;top:');
htmlArr.push(y * rowHeight);
htmlArr.push('px;width:');
htmlArr.push(rowWidth);
htmlArr.push('px;height:');
htmlArr.push(rowHeight);
htmlArr.push('px');
}
rowRenderer._createRowStyle_array_join(cellInfo, htmlArr);
htmlArr.push('">');
var left = 0;
for (var x = 0; x < colCount; x++) {
var col = paneModel.getColumnAtX(x);
cellInfo.xPos = x;
cellInfo.col = col;
cellInfo.editable = tableModel.isColumnEditable(col);
cellInfo.focusedCol = (this._focusedCol == col);
cellInfo.value = tableModel.getValue(col, row);
var cellWidth = columnModel.getColumnWidth(col);
cellInfo.styleLeft = left;
cellInfo.styleWidth = cellWidth;
var cellRenderer = columnModel.getDataCellRenderer(col);
cellRenderer.createDataCellHtml_array_join(cellInfo, htmlArr);
left += cellWidth;
}
if (TablePane.USE_TABLE) {
htmlArr.push('</tr>');
} else {
htmlArr.push('</div>');
}
}
if (TablePane.USE_TABLE) {
htmlArr.push('</tbody></table>');
}
var elem = this.getElement();
// this.debug(">>>" + htmlArr.join("") + "<<<")
elem.innerHTML = htmlArr.join("");
this.setHeight(rowCount * rowHeight);
this._lastColCount = colCount;
this._lastRowCount = rowCount;
}
/**
* Updates the content of the pane (old implementation).
*
* @param completeUpdate {Boolean ? false} if true a complete update is performed.
* On a complete update all cell widgets are recreated.
* @param onlyRow {Integer ? null} if set only the specified row will be updated.
* @param onlySelectionOrFocusChanged {Boolean ? false} if true, cell values won't
* be updated. Only the row background will.
*/
qx.Proto._updateContent_orig = function(completeUpdate, onlyRow,
onlySelectionOrFocusChanged)
{
var TablePane = qx.ui.table.TablePane;
var table = this.getTable();
var alwaysUpdateCells = table.getAlwaysUpdateCells();
var selectionModel = table.getSelectionModel();
var tableModel = table.getTableModel();
var columnModel = table.getTableColumnModel();
var paneModel = this.getPaneScroller().getTablePaneModel();
var rowRenderer = table.getDataRowRenderer();
var colCount = paneModel.getColumnCount();
var rowHeight = table.getRowHeight();
var firstRow = this.getFirstVisibleRow();
var rowCount = this.getVisibleRowCount();
var modelRowCount = tableModel.getRowCount();
if (firstRow + rowCount > modelRowCount) {
rowCount = Math.max(0, modelRowCount - firstRow);
}
// Remove the rows that are not needed any more
if (completeUpdate || this._lastRowCount > rowCount) {
var firstRowToRemove = completeUpdate ? 0 : rowCount;
this._cleanUpRows(firstRowToRemove);
}
if (TablePane.USE_TABLE) {
throw new Error("Combination of USE_TABLE==true and USE_ARRAY_JOIN==false is not yet implemented");
}
var elem = this.getElement();
var childNodes = elem.childNodes;
var cellInfo = { table:table };
tableModel.prefetchRows(firstRow, firstRow + rowCount - 1);
for (var y = 0; y < rowCount; y++) {
var row = firstRow + y;
if ((onlyRow != null) && (row != onlyRow)) {
continue;
}
cellInfo.row = row;
cellInfo.selected = selectionModel.isSelectedIndex(row);
cellInfo.focusedRow = (this._focusedRow == row);
cellInfo.rowData = tableModel.getRowData(row);
// Update this row
var rowElem;
var recyleRowElem;
if (y < childNodes.length) {
rowElem = childNodes[y];
recyleRowElem = true
} else {
var rowElem = document.createElement("div");
//rowElem.style.position = "relative";
rowElem.style.position = "absolute";
rowElem.style.left = "0px";
rowElem.style.top = (y * rowHeight) + "px";
rowElem.style.height = rowHeight + "px";
elem.appendChild(rowElem);
recyleRowElem = false;
}
rowRenderer.updateDataRowElement(cellInfo, rowElem);
if (alwaysUpdateCells || !recyleRowElem || !onlySelectionOrFocusChanged) {
var html = "";
var left = 0;
for (var x = 0; x < colCount; x++) {
var col = paneModel.getColumnAtX(x);
cellInfo.xPos = x;
cellInfo.col = col;
cellInfo.editable = tableModel.isColumnEditable(col);
cellInfo.focusedCol = (this._focusedCol == col);
cellInfo.value = tableModel.getValue(col, row);
var width = columnModel.getColumnWidth(col);
cellInfo.style = 'position:absolute;left:' + left
+ 'px;top:0px;width:' + width
+ 'px; height:' + rowHeight + "px";
var cellRenderer = columnModel.getDataCellRenderer(col);
if (recyleRowElem) {
var cellElem = rowElem.childNodes[x];
cellRenderer.updateDataCellElement(cellInfo, cellElem);
} else {
html += cellRenderer.createDataCellHtml(cellInfo);
}
left += width;
}
if (! recyleRowElem) {
rowElem.style.width = left + "px";
rowElem.innerHTML = html;
}
}
}
this.setHeight(rowCount * rowHeight);
this._lastColCount = colCount;
this._lastRowCount = rowCount;
}
/**
* Cleans up the row widgets.
*
* @param firstRowToRemove {Integer} the visible index of the first row to clean up.
* All following rows will be cleaned up, too.
*/
qx.Proto._cleanUpRows = function(firstRowToRemove) {
var elem = this.getElement();
if (elem) {
var childNodes = this.getElement().childNodes;
var paneModel = this.getPaneScroller().getTablePaneModel();
var colCount = paneModel.getColumnCount();
for (var y = childNodes.length - 1; y >= firstRowToRemove; y--) {
elem.removeChild(childNodes[y]);
}
}
}
// overridden
qx.Proto.dispose = function() {
if (this.getDisposed()) {
return true;
}
this._cleanUpRows(0);
return qx.ui.basic.Terminator.prototype.dispose.call(this);
}
qx.Class.USE_ARRAY_JOIN = false;
qx.Class.USE_TABLE = false;
qx.Class.CONTENT_ROW_FONT_FAMILY_TEST = "'Segoe UI', Corbel, Calibri, Tahoma, 'Lucida Sans Unicode', sans-serif";
qx.Class.CONTENT_ROW_FONT_SIZE_TEST = "11px";
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