Java tutorial
/* * Copyright (C) 2011 The Android Open Source Project * * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php * * 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.android.ide.eclipse.adt.internal.wizards.newproject; import com.android.ide.common.xml.ManifestData; import com.android.ide.eclipse.adt.internal.project.AndroidManifestHelper; import com.android.ide.eclipse.adt.internal.project.ProjectChooserHelper; import com.android.ide.eclipse.adt.internal.sdk.Sdk; import com.android.sdklib.IAndroidTarget; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.jdt.core.IJavaModel; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.ui.JavaElementLabelProvider; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.dialogs.FilteredList; /** * Page shown when creating a test project which lets you choose between testing * yourself and testing a different project */ class TestTargetPage extends WizardPage implements SelectionListener { private final NewProjectWizardState mValues; /** Flag used when setting button/text state manually to ignore listener updates */ private boolean mIgnore; private String mLastExistingPackageName; private Button mCurrentRadioButton; private Button mExistingRadioButton; private FilteredList mProjectList; private boolean mPageShown; /** * Create the wizard. */ TestTargetPage(NewProjectWizardState values) { super("testTargetPage"); //$NON-NLS-1$ setTitle("Select Test Target"); setDescription("Choose a project to test"); mValues = values; } /** * Create contents of the wizard. */ @Override public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); setControl(container); container.setLayout(new GridLayout(2, false)); mCurrentRadioButton = new Button(container, SWT.RADIO); mCurrentRadioButton.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); mCurrentRadioButton.setText("This project"); mCurrentRadioButton.addSelectionListener(this); mExistingRadioButton = new Button(container, SWT.RADIO); mExistingRadioButton.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); mExistingRadioButton.setText("An existing Android project:"); mExistingRadioButton.addSelectionListener(this); ILabelProvider labelProvider = new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT); mProjectList = new FilteredList(container, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE, labelProvider, true /*ignoreCase*/, false /*allowDuplicates*/, true /* matchEmptyString*/); mProjectList.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1)); mProjectList.addSelectionListener(this); } private void initializeList() { ProjectChooserHelper helper = new ProjectChooserHelper(getShell(), null /*filter*/); IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); IJavaModel javaModel = JavaCore.create(workspaceRoot); IJavaProject[] androidProjects = helper.getAndroidProjects(javaModel); mProjectList.setElements(androidProjects); if (mValues.testedProject != null) { for (IJavaProject project : androidProjects) { if (project.getProject() == mValues.testedProject) { mProjectList.setSelection(new Object[] { project }); break; } } } else { // No initial selection: force the user to choose mProjectList.setSelection(new int[0]); } } @Override public void setVisible(boolean visible) { super.setVisible(visible); mPageShown = true; if (visible) { try { mIgnore = true; mCurrentRadioButton.setSelection(mValues.testingSelf); mExistingRadioButton.setSelection(!mValues.testingSelf); mProjectList.setEnabled(!mValues.testingSelf); if (mProjectList.isEmpty()) { initializeList(); } if (!mValues.testingSelf) { mProjectList.setFocus(); IProject project = getSelectedProject(); if (project != null) { // The FilteredList seems to -insist- on selecting the first item // in the list, even when the selection is explicitly set to an empty // array. This means the user is looking at a selection, so we need // to also go ahead and select this item in the model such that the // two agree, even if we would have preferred to have no initial // selection. mValues.testedProject = project; } } } finally { mIgnore = false; } } validatePage(); } @Override public void widgetSelected(SelectionEvent e) { if (mIgnore) { return; } Object source = e.getSource(); if (source == mExistingRadioButton) { mProjectList.setEnabled(true); mValues.testingSelf = false; setExistingProject(getSelectedProject()); mProjectList.setFocus(); } else if (source == mCurrentRadioButton) { mProjectList.setEnabled(false); mValues.testingSelf = true; mValues.testedProject = null; } else { // The event must be from the project list, which unfortunately doesn't // pass itself as the selection event, it passes a reference to some internal // table widget that it uses, so we check for this case last IProject project = getSelectedProject(); if (project != mValues.testedProject) { setExistingProject(project); } } validatePage(); } private IProject getSelectedProject() { Object[] selection = mProjectList.getSelection(); IProject project = selection != null && selection.length == 1 ? ((IJavaProject) selection[0]).getProject() : null; return project; } @Override public void widgetDefaultSelected(SelectionEvent e) { } private void setExistingProject(IProject project) { mValues.testedProject = project; // Try to update the application, package, sdk target and minSdkVersion accordingly if (project != null && (!mValues.applicationNameModifiedByUser || !mValues.packageNameModifiedByUser || !mValues.targetModifiedByUser || !mValues.minSdkModifiedByUser)) { ManifestData manifestData = AndroidManifestHelper.parseForData(project); if (manifestData != null) { String appName = String.format("%1$sTest", project.getName()); String packageName = manifestData.getPackage(); String minSdkVersion = manifestData.getMinSdkVersionString(); IAndroidTarget sdkTarget = null; if (Sdk.getCurrent() != null) { sdkTarget = Sdk.getCurrent().getTarget(project); } if (packageName == null) { packageName = ""; //$NON-NLS-1$ } mLastExistingPackageName = packageName; if (!mValues.projectNameModifiedByUser) { mValues.projectName = appName; } if (!mValues.applicationNameModifiedByUser) { mValues.applicationName = appName; } if (!mValues.packageNameModifiedByUser) { packageName += ".test"; //$NON-NLS-1$ mValues.packageName = packageName; } if (!mValues.targetModifiedByUser && sdkTarget != null) { mValues.target = sdkTarget; } if (!mValues.minSdkModifiedByUser) { if (minSdkVersion != null || sdkTarget != null) { mValues.minSdk = minSdkVersion; } if (sdkTarget == null) { mValues.updateSdkTargetToMatchMinSdkVersion(); } } } } updateTestTargetPackageField(mLastExistingPackageName); } /** * Updates the test target package name * * When using the "self-test" option, the packageName argument is ignored and the * current value from the project package is used. * * Otherwise the packageName is used if it is not null. */ private void updateTestTargetPackageField(String packageName) { if (mValues.testingSelf) { mValues.testTargetPackageName = mValues.packageName; } else if (packageName != null) { mValues.testTargetPackageName = packageName; } } @Override public boolean isPageComplete() { // Ensure that the user sees the page and makes a selection if (!mPageShown) { return false; } return super.isPageComplete(); } private void validatePage() { String error = null; if (!mValues.testingSelf) { if (mValues.testedProject == null) { error = "Please select an existing Android project as a test target."; } else if (mValues.projectName.equals(mValues.testedProject.getName())) { error = "The main project name and the test project name must be different."; } } // -- update UI & enable finish if there's no error setPageComplete(error == null); if (error != null) { setMessage(error, IMessageProvider.ERROR); } else { setErrorMessage(null); setMessage(null); } } }