/*
* Copyright 2008 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.gen2.demo.scrolltable.client.option.highlight;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.gen2.demo.scrolltable.client.PagingScrollTableDemo;
import com.google.gwt.gen2.demo.scrolltable.client.ScrollTableDemo;
import com.google.gwt.gen2.demo.scrolltable.client.option.AbstractOption;
import com.google.gwt.gen2.demo.scrolltable.client.option.CustomForm;
import com.google.gwt.gen2.table.client.SelectionGrid;
import com.google.gwt.gen2.table.client.SelectionGrid.SelectionPolicy;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.Widget;
/**
* An option.
*/
public class RowSelectionPolicyOption extends AbstractOption {
private static final String DESC_SELECTION = "Row selection allows the user "
+ "to select one or more rows from the table "
+ "using mouse clicks. Use the ctrl button to add to the selected rows, "
+ "and use the shift button to select multiple rows in a range.";
/**
* The list box used to select the selection policy.
*/
private ListBox policyBox = null;
/**
* The label used to display selection status.
*/
private Label statusLabel = null;
@Override
protected String getDescription() {
return DESC_SELECTION;
}
@Override
protected Widget onInitialize() {
CustomForm form = new CustomForm();
// Add the current status
statusLabel = new Label();
form.addLabeledWidget("Selection Status:", statusLabel);
// Add the current policy
policyBox = new ListBox();
policyBox.addItem("Multi Row");
policyBox.addItem("Single Row");
policyBox.addItem("Checkboxes");
policyBox.addItem("Radio Buttons");
form.addLabeledWidget("Selection Policy:", policyBox);
// Add button to change policy
{
Button button = new Button("Set Selection Policy", new ClickHandler() {
public void onClick(ClickEvent event) {
SelectionGrid grid = ScrollTableDemo.get().getDataTable();
switch (policyBox.getSelectedIndex()) {
case 0:
grid.setSelectionPolicy(SelectionPolicy.MULTI_ROW);
break;
case 1:
grid.setSelectionPolicy(SelectionPolicy.ONE_ROW);
break;
case 2:
grid.setSelectionPolicy(SelectionPolicy.CHECKBOX);
break;
case 3:
grid.setSelectionPolicy(SelectionPolicy.RADIO);
break;
}
PagingScrollTableDemo.get().getPagingScrollTable().reloadPage();
}
});
form.addButton(button);
}
// Add button to change status
{
Button button = new Button("Toggle Status", new ClickHandler() {
public void onClick(ClickEvent event) {
SelectionGrid grid = ScrollTableDemo.get().getDataTable();
grid.setSelectionEnabled(!grid.isSelectionEnabled());
refreshPolicy();
}
});
form.addButton(button);
}
// Refresh policy and return
refreshPolicy();
return form;
}
/**
* Refresh the policy.
*/
private void refreshPolicy() {
SelectionGrid grid = ScrollTableDemo.get().getDataTable();
// Refresh the status
if (grid.isSelectionEnabled()) {
statusLabel.setText("enabled");
} else {
statusLabel.setText("disabled");
}
// Refresh the policy
SelectionPolicy policy = grid.getSelectionPolicy();
if (policy == SelectionPolicy.MULTI_ROW) {
policyBox.setSelectedIndex(0);
} else if (policy == SelectionPolicy.ONE_ROW) {
policyBox.setSelectedIndex(1);
} else if (policy == SelectionPolicy.CHECKBOX) {
policyBox.setSelectedIndex(2);
} else if (policy == SelectionPolicy.RADIO) {
policyBox.setSelectedIndex(3);
}
}
}