/*
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.demos.scrolltable.client;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.widgetideas.table.client.ScrollTable;
/**
* A tab panel of various options used to change the width of columns in the
* table.
*/
public class DemoTabColumnWidth extends DemoTab implements ClickListener {
/**
* The description of fixed width resizing.
*/
private static final String DESC_FIXED_WIDTH = "When fixed width resizing is "
+ "enabled, the grid will do its best to make sure that its contents fit "
+ "withing its visible area so you do not see a horizontal scrollbar.";
/**
* The description of hide a column.
*/
private static final String DESC_HIDE = "Completely hide a column from view";
/**
* The description of resizing a column.
*/
private static final String DESC_RESIZE = "Manually set the absolute size of a column.";
/**
* The description of stretching a column.
*/
private static final String DESC_STRETCH = "Stretch a column to automatically calculate the minimum column width "
+ "required to display the contents of every cell in the data portion of "
+ "the column. The header cells are ignored when stretching a column.";
/**
* The column index box.
*/
private TextBox columnIndexBox = new TextBox();
/**
* The width box.
*/
private TextBox columnWidthBox = new TextBox();
/**
* The grid used for formatting.
*/
private Grid grid;
/**
* The checkbox used to select guaranteed sizing.
*/
private CheckBox guaranteedCheck = new CheckBox("Guaranteed");
/**
* The button used to hide a column.
*/
private Button hideButton = new Button("Hide Column", this);
/**
* The button used to show a column.
*/
private Button showButton = new Button("Show Column", this);
/**
* The button used to resize a column.
*/
private Button resizeButton = new Button("Resize Column", this);
/**
* The drop box of resize policy options.
*/
private ListBox resizePolicyBox = new ListBox();
/**
* The button used to stretch a column.
*/
private Button resizePolicyButton = new Button("Set Resize Policy", this);
/**
* The button used to stretch a column.
*/
private Button stretchButton = new Button("Stretch to Fit", this);
/**
* Handle click events from the buttons in this panel.
*
* @param sender
*/
public void onClick(Widget sender) {
try {
ScrollTable scrollTable = ScrollTableDemo.getScrollTable();
if (sender == resizeButton) {
// Resize the column
int column = Integer.parseInt(columnIndexBox.getText());
int width = Integer.parseInt(columnWidthBox.getText());
if (guaranteedCheck.isChecked()) {
scrollTable.setGuaranteedColumnWidth(column, width);
} else {
scrollTable.setColumnWidth(column, width);
}
} else if (sender == stretchButton) {
// Stretch to fit contents
int column = Integer.parseInt(columnIndexBox.getText());
scrollTable.autoFitColumnWidth(column);
} else if (sender == hideButton) {
// Hide a column
Window.alert("Feature not available");
} else if (sender == showButton) {
// Show a column
Window.alert("Feature not available");
} else if (sender == resizePolicyButton) {
// Set the resize policy
String selection = resizePolicyBox.getValue(resizePolicyBox.getSelectedIndex());
if (selection.equals("Disabled")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.DISABLED);
} else if (selection.equals("Unconstrained")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.UNCONSTRAINED);
} else if (selection.equals("Flow")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.FLOW);
} else if (selection.equals("Fixed")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.FIXED_WIDTH);
} else if (selection.equals("Fill")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.FILL_WIDTH);
} else if (selection.equals("Fill Disabled")) {
scrollTable.setResizePolicy(ScrollTable.ResizePolicy.FILL_WIDTH_DISABLED);
}
}
} catch (IndexOutOfBoundsException e) {
Window.alert("The column index you entered is out of bounds.");
} catch (NumberFormatException e) {
Window.alert("Please enter valid integers for the column and width.");
}
}
@Override
protected Widget onInitialize() {
grid = new Grid(4, 4);
grid.setCellSpacing(0);
grid.setBorderWidth(1);
// Column options
columnIndexBox.setWidth("70px");
columnIndexBox.setText("0");
grid.setHTML(0, 0, "<B>Column:</B>");
grid.setWidget(0, 1, columnIndexBox);
grid.setWidget(0, 2, stretchButton);
grid.setHTML(0, 3, DESC_STRETCH);
// Width options
VerticalPanel widthContainer = new VerticalPanel();
widthContainer.add(columnWidthBox);
widthContainer.add(guaranteedCheck);
columnWidthBox.setWidth("70px");
columnWidthBox.setText("10");
grid.setHTML(1, 0, "<B>Width:</B>");
grid.setWidget(1, 1, widthContainer);
grid.setWidget(1, 2, resizeButton);
grid.setHTML(1, 3, DESC_RESIZE);
// hide options
columnWidthBox.setWidth("70px");
columnWidthBox.setText("10");
grid.setHTML(2, 0, "<BR>");
grid.setWidget(2, 1, showButton);
grid.setWidget(2, 2, hideButton);
grid.setHTML(2, 3, DESC_HIDE);
// Fixed width options
resizePolicyBox.addItem("Disabled");
resizePolicyBox.addItem("Unconstrained");
resizePolicyBox.addItem("Flow");
resizePolicyBox.addItem("Fixed");
resizePolicyBox.addItem("Fill");
resizePolicyBox.addItem("Fill Disabled");
resizePolicyBox.setSelectedIndex(3);
grid.setHTML(3, 0, "<BR>");
grid.setWidget(3, 1, resizePolicyButton);
grid.setWidget(3, 2, resizePolicyBox);
grid.setHTML(3, 3, DESC_FIXED_WIDTH);
return grid;
}
}