com.google.cloud.tools.eclipse.appengine.newproject.AppEngineWizardPage.java Source code

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Here is the source code for com.google.cloud.tools.eclipse.appengine.newproject.AppEngineWizardPage.java

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/*
 * Copyright 2016 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.cloud.tools.eclipse.appengine.newproject;

import com.google.cloud.tools.eclipse.appengine.libraries.model.Library;
import com.google.cloud.tools.eclipse.appengine.ui.AppEngineImages;
import com.google.cloud.tools.eclipse.appengine.ui.AppEngineLibrariesSelectorGroup;
import java.io.File;
import java.util.Collection;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.dialogs.WizardNewProjectCreationPage;

/**
 * UI to collect all information necessary to create a new App Engine Java Eclipse project.
 */
public abstract class AppEngineWizardPage extends WizardNewProjectCreationPage {

    private Text javaPackageField;
    private AppEngineLibrariesSelectorGroup appEngineLibrariesSelectorGroup;
    private Text serviceNameField;

    public AppEngineWizardPage() {
        super("basicNewProjectPage"); //$NON-NLS-1$
        setImageDescriptor(AppEngineImages.appEngine(64));
    }

    public abstract void sendAnalyticsPing(Shell parentShell);

    public abstract void setHelp(Composite container);

    @Override
    public void createControl(Composite parent) {
        super.createControl(parent);
        sendAnalyticsPing(parent.getShell());

        Composite container = (Composite) getControl();
        setHelp(container);

        ModifyListener pageValidator = new PageValidator();
        createCustomFields(container, pageValidator);

        // Manage APIs
        appEngineLibrariesSelectorGroup = new AppEngineLibrariesSelectorGroup(container);

        setPageComplete(validatePage());
        // Show enter project name on opening
        setErrorMessage(null);
        setMessage(Messages.getString("enter.project.name"));

        Dialog.applyDialogFont(container);
    }

    private void createCustomFields(Composite container, ModifyListener pageValidator) {
        Composite composite = new Composite(container, SWT.NONE);
        GridDataFactory.fillDefaults().applyTo(composite);

        GridLayout layout = new GridLayout();
        layout.numColumns = 2;
        composite.setLayout(layout);

        createPackageField(composite, pageValidator);
        createServiceField(composite, pageValidator);
    }

    // Java package name
    private void createPackageField(Composite parent, ModifyListener pageValidator) {
        Label packageNameLabel = new Label(parent, SWT.LEAD);
        packageNameLabel.setText(Messages.getString("java.package")); //$NON-NLS-1$
        javaPackageField = new Text(parent, SWT.BORDER);

        javaPackageField.addModifyListener(pageValidator);

        GridDataFactory.fillDefaults().grab(true, false).applyTo(javaPackageField);
    }

    // App Engine service name
    private void createServiceField(Composite parent, ModifyListener pageValidator) {

        Label serviceNameLabel = new Label(parent, SWT.LEAD);
        serviceNameLabel.setText(Messages.getString("app.engine.service"));
        serviceNameField = new Text(parent, SWT.BORDER);
        serviceNameField.setMessage("default"); //$NON-NLS-1$
        serviceNameField.addModifyListener(pageValidator);

        GridDataFactory.fillDefaults().grab(true, false).applyTo(serviceNameField);
    }

    @Override
    public boolean validatePage() {
        setErrorMessage(null);
        setMessage(null);

        if (!super.validatePage()) {
            return false;
        }

        return validateLocalFields();
    }

    private boolean validateLocalFields() {
        String packageName = javaPackageField.getText();
        IStatus packageStatus = JavaPackageValidator.validate(packageName);
        if (!packageStatus.isOK()) {
            String message = Messages.getString("illegal.package.name", //$NON-NLS-1$
                    packageStatus.getMessage());
            setErrorMessage(message);
            return false;
        }

        File parent = getLocationPath().toFile();
        File projectDirectory = new File(parent, getProjectName());
        if (projectDirectory.exists()) {
            setErrorMessage(Messages.getString("project.location.exists", projectDirectory)); //$NON-NLS-1$
            return false;
        }

        return true;
    }

    private final class PageValidator implements ModifyListener {
        @Override
        public void modifyText(ModifyEvent event) {
            setPageComplete(validatePage());
        }
    }

    public String getPackageName() {
        return javaPackageField.getText();
    }

    public Collection<Library> getSelectedLibraries() {
        return appEngineLibrariesSelectorGroup.getSelectedLibraries();
    }

    @Override
    public void dispose() {
        appEngineLibrariesSelectorGroup.dispose();
        super.dispose();
    }

    public String getServiceName() {
        return serviceNameField.getText();
    }
}