/*
* Copyright 2010 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.expenses.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import java.util.List;
/**
* Entry point to create database entries for the Expenses app.
*/
public class LoadExpensesDB implements EntryPoint {
private TextBox amountTextBox;
private Button countEmployeesButton;
private Label countEmployeesLabel;
private Button countExpensesButton;
private Label countExpensesLabel;
private Button countReportsButton;
private Label countReportsLabel;
private final DataGenerationServiceAsync dataService = GWT.create(DataGenerationService.class);
private Button deleteButton;
private Button generateButton;
private Label numEmployeesLabel;
private Label numExpensesLabel;
private Label numReportsLabel;
private Button resetCountsButton;
private Label resetCountsLabel;
private Label statusLabel;
public void onModuleLoad() {
statusLabel = new Label("");
numEmployeesLabel = new Label("-- Employees");
numReportsLabel = new Label("-- Reports");
numExpensesLabel = new Label("-- Expenses");
generateButton = new Button("Generate Data");
deleteButton = new Button("Delete everything");
amountTextBox = new TextBox();
amountTextBox.setText("200");
countEmployeesButton = new Button("Count Employees");
countEmployeesLabel = new Label("-- Employees");
countExpensesButton = new Button("Count Expenses");
countExpensesLabel = new Label("-- Expenses");
countReportsButton = new Button("Count Reports");
countReportsLabel = new Label("-- Reports");
resetCountsButton = new Button("Reset Counts");
resetCountsLabel = new Label("");
generateButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
generateButton.setEnabled(false);
generateData(Integer.parseInt(amountTextBox.getText()));
}
});
deleteButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
deleteButton.setEnabled(false);
deleteData();
}
});
resetCountsButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
resetCountsButton.setEnabled(false);
resetCounts();
}
});
countEmployeesButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
countEmployeesButton.setEnabled(false);
countEmployees();
}
});
countExpensesButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
countExpensesButton.setEnabled(false);
countExpenses();
}
});
countReportsButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
countReportsButton.setEnabled(false);
countReports();
}
});
RootPanel root = RootPanel.get();
root.add(resetCountsButton);
root.add(resetCountsLabel);
root.add(new HTML("<br><br>"));
root.add(countEmployeesButton);
root.add(countEmployeesLabel);
root.add(new HTML("<br><br>"));
root.add(countExpensesButton);
root.add(countExpensesLabel);
root.add(new HTML("<br><br>"));
root.add(countReportsButton);
root.add(countReportsLabel);
root.add(new HTML("<br><br>"));
root.add(generateButton);
root.add(amountTextBox);
root.add(statusLabel);
root.add(numEmployeesLabel);
root.add(numReportsLabel);
root.add(numExpensesLabel);
// This button deletes a random chunk from the data store -- be careful!
// root.add(new HTML("<br><br><br><br><br><br><br><br><br>"));
// root.add(deleteButton);
updateCounts();
}
private void countEmployees() {
countEmployeesLabel.setText("Counting...");
dataService.countEmployees(new AsyncCallback<Long>() {
public void onFailure(Throwable caught) {
countEmployeesButton.setEnabled(true);
countEmployeesLabel.setText("Failed");
}
public void onSuccess(Long result) {
countEmployeesButton.setEnabled(true);
countEmployeesLabel.setText("" + result);
}
});
}
private void countExpenses() {
countExpensesLabel.setText("Counting...");
dataService.countExpenses(new AsyncCallback<Long>() {
public void onFailure(Throwable caught) {
countExpensesButton.setEnabled(true);
countExpensesLabel.setText("Failed");
}
public void onSuccess(Long result) {
countExpensesButton.setEnabled(true);
countExpensesLabel.setText("" + result);
}
});
}
private void countReports() {
countReportsLabel.setText("Counting...");
dataService.countReports(new AsyncCallback<Long>() {
public void onFailure(Throwable caught) {
countReportsButton.setEnabled(true);
countReportsLabel.setText("Failed");
}
public void onSuccess(Long result) {
countReportsButton.setEnabled(true);
countReportsLabel.setText("" + result);
}
});
}
private void deleteData() {
dataService.delete(new AsyncCallback<Void>() {
public void onFailure(Throwable caught) {
statusLabel.setText("Deletion failed");
deleteButton.setEnabled(true);
updateCounts();
}
public void onSuccess(Void result) {
statusLabel.setText("Deletion succeeded");
deleteButton.setEnabled(true);
updateCounts();
}
});
}
private void generateData(int amount) {
dataService.generate(amount, new AsyncCallback<Void>() {
public void onFailure(Throwable caught) {
statusLabel.setText("Data generation failed");
generateButton.setEnabled(true);
updateCounts();
}
public void onSuccess(Void result) {
statusLabel.setText("Data generation succeeded");
generateButton.setEnabled(true);
updateCounts();
}
});
}
private void resetCounts() {
resetCountsLabel.setText("Resetting counts...");
dataService.resetCounters(new AsyncCallback<Void>() {
public void onFailure(Throwable caught) {
resetCountsButton.setEnabled(true);
resetCountsLabel.setText("Resetting counts failed");
}
public void onSuccess(Void result) {
resetCountsButton.setEnabled(true);
resetCountsLabel.setText("Resetting counts succeeded");
}
});
}
private void updateCounts() {
dataService.getCounts(new AsyncCallback<List<Integer>>() {
public void onFailure(Throwable caught) {
numEmployeesLabel.setText("? Employees");
numReportsLabel.setText("? Reports");
numExpensesLabel.setText("? Expenses");
}
public void onSuccess(List<Integer> result) {
numEmployeesLabel.setText("" + result.get(0) + " Employees");
numReportsLabel.setText("" + result.get(1) + " Reports");
numExpensesLabel.setText("" + result.get(2) + " Expenses");
}
});
}
}