/*
* 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.sample.showcase.client.content.tables;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.sample.showcase.client.ContentWidget;
import com.google.gwt.sample.showcase.client.Showcase;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseData;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseSource;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseStyle;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* Example file.
*/
@ShowcaseStyle(".cw-FlexTable")
public class CwFlexTable extends ContentWidget {
/**
* The constants used in this Content Widget.
*/
@ShowcaseSource
public static interface CwConstants extends Constants {
String cwFlexTableAddRow();
String cwFlexTableDescription();
String cwFlexTableDetails();
String cwFlexTableName();
String cwFlexTableRemoveRow();
}
/**
* An instance of the constants.
*/
@ShowcaseData
private final CwConstants constants;
/**
* Constructor.
*
* @param constants the constants
*/
public CwFlexTable(CwConstants constants) {
super(
constants.cwFlexTableName(), constants.cwFlexTableDescription(), true);
this.constants = constants;
}
/**
* Initialize this example.
*/
@ShowcaseSource
@Override
public Widget onInitialize() {
// Create a Flex Table
final FlexTable flexTable = new FlexTable();
FlexCellFormatter cellFormatter = flexTable.getFlexCellFormatter();
flexTable.addStyleName("cw-FlexTable");
flexTable.setWidth("32em");
flexTable.setCellSpacing(5);
flexTable.setCellPadding(3);
// Add some text
cellFormatter.setHorizontalAlignment(
0, 1, HasHorizontalAlignment.ALIGN_LEFT);
flexTable.setHTML(0, 0, constants.cwFlexTableDetails());
cellFormatter.setColSpan(0, 0, 2);
// Add a button that will add more rows to the table
Button addRowButton = new Button(
constants.cwFlexTableAddRow(), new ClickHandler() {
public void onClick(ClickEvent event) {
addRow(flexTable);
}
});
addRowButton.addStyleName("sc-FixedWidthButton");
Button removeRowButton = new Button(
constants.cwFlexTableRemoveRow(), new ClickHandler() {
public void onClick(ClickEvent event) {
removeRow(flexTable);
}
});
removeRowButton.addStyleName("sc-FixedWidthButton");
VerticalPanel buttonPanel = new VerticalPanel();
buttonPanel.setStyleName("cw-FlexTable-buttonPanel");
buttonPanel.add(addRowButton);
buttonPanel.add(removeRowButton);
flexTable.setWidget(0, 1, buttonPanel);
cellFormatter.setVerticalAlignment(0, 1, HasVerticalAlignment.ALIGN_TOP);
// Add two rows to start
addRow(flexTable);
addRow(flexTable);
// Return the panel
flexTable.ensureDebugId("cwFlexTable");
return flexTable;
}
@Override
protected void asyncOnInitialize(final AsyncCallback<Widget> callback) {
GWT.runAsync(CwFlexTable.class, new RunAsyncCallback() {
public void onFailure(Throwable caught) {
callback.onFailure(caught);
}
public void onSuccess() {
callback.onSuccess(onInitialize());
}
});
}
/**
* Add a row to the flex table.
*/
@ShowcaseSource
private void addRow(FlexTable flexTable) {
int numRows = flexTable.getRowCount();
flexTable.setWidget(numRows, 0, new Image(Showcase.images.gwtLogo()));
flexTable.setWidget(numRows, 1, new Image(Showcase.images.gwtLogo()));
flexTable.getFlexCellFormatter().setRowSpan(0, 1, numRows + 1);
}
/**
* Remove a row from the flex table.
*/
@ShowcaseSource
private void removeRow(FlexTable flexTable) {
int numRows = flexTable.getRowCount();
if (numRows > 1) {
flexTable.removeRow(numRows - 1);
flexTable.getFlexCellFormatter().setRowSpan(0, 1, numRows - 1);
}
}
}