Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * 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.motorola.studio.android.wizards.buildingblocks; import org.eclipse.jface.dialogs.IPageChangeProvider; import org.eclipse.jface.dialogs.IPageChangedListener; import org.eclipse.jface.dialogs.PageChangedEvent; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.wizard.IWizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.ScrolledComposite; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import com.motorola.studio.android.codeutils.CodeUtilsActivator; import com.motorola.studio.android.codeutils.i18n.CodeUtilsNLS; import com.motorola.studio.android.common.exception.AndroidException; import com.motorola.studio.android.common.utilities.AndroidUtils; import com.motorola.studio.android.model.ActivityBasedOnTemplate; /** * New activity wizard sample page. */ public class ActivitySampleSelectionPage extends NewLauncherWizardPage { private static final String ANDROID_LOGO_ICON_PATH = "icons/obj16/androidLogo.png"; private TreeViewer treeViewer; private Label descriptionLabel; private String content[]; private boolean canFlip = false; private static final String NEW_ACTIVITY_BASED_ON_TEMPLATE_HELP = CodeUtilsActivator.PLUGIN_ID + ".new-activity-based-on-template"; //$NON-NLS-1$ private static Image androidImg = null; public static final String PAGE_NAME = "Samples Page"; /* * Listener to update description pane whenever this page is open */ private class PageChangeListener implements IPageChangedListener { public void pageChanged(PageChangedEvent event) { if ((event.getSelectedPage() == ActivitySampleSelectionPage.this)) { ActivitySampleSelectionPage.this.getControl().update(); ((ActivitySampleSelectionPage) event.getSelectedPage()).updateDescriptionPane(); } } } /** * Create a new wizard page based on activity samples. * @param activity The building block model to be used in the wizard page. * */ protected ActivitySampleSelectionPage(ActivityBasedOnTemplate activity) { super(activity, PAGE_NAME); activity.evaluateSamplesList(ActivityBasedOnTemplate.SAMPLE_CATEGORY.SAMPLE_ACTIVITIES_CATEGORY); ImageDescriptor imgDescr = CodeUtilsActivator.imageDescriptorFromPlugin(CodeUtilsActivator.PLUGIN_ID, ANDROID_LOGO_ICON_PATH); if (imgDescr != null) { androidImg = imgDescr.createImage(); } } /* * (non-Javadoc) * */ @Override public boolean canFlipToNextPage() { return canFlip; } /* * (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizard#getBuildBlock() */ @Override public ActivityBasedOnTemplate getBuildBlock() { return (ActivityBasedOnTemplate) super.getBuildBlock(); } @Override public IWizardPage getNextPage() { String selection = treeViewer.getSelection() != null ? treeViewer.getSelection().toString() : null; selection = selection != null ? selection.substring(1, selection.length() - 1) : null; if ((selection != null) && selection.equalsIgnoreCase(ActivityBasedOnTemplate.LIST_ACTIVITIES_SAMPLE_LOCALIZED)) { return this.getWizard().getPage(NewActivityWizardListTemplatesPage.PAGE_NAME); } return this.getWizard().getPage(CodeUtilsNLS.UI_NewActivityMainPage_PageTitle); } /* (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getMethods() */ @Override protected Method[] getMethods() { Method onCreateMethod = new Method(getBuildBlock().getOnStartMessage()) { @Override public void handle(boolean selection) { getBuildBlock().setOnStart(selection); } }; return new Method[] { onCreateMethod }; } /* (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#createIntermediateControls(org.eclipse.swt.widgets.Composite) */ @Override protected void createExtendedControls(Composite parent) { Composite mainComposite = new Composite(parent, SWT.FILL); mainComposite.setLayout(new GridLayout(1, false)); mainComposite.setLayoutData(new GridData(GridData.FILL_BOTH)); // Samples Tree Label Label itemsTableLabel = new Label(mainComposite, SWT.NONE); itemsTableLabel.setText(CodeUtilsNLS.UI_SampleSelectionPage_SamplesTreeLabel); // Samples Tree Viewer treeViewer = new TreeViewer(mainComposite, SWT.BORDER | SWT.SINGLE | SWT.V_SCROLL); treeViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); treeViewer.setLabelProvider(new LabelProvider() { @Override public Image getImage(Object obj) { return androidImg; } @Override public String getText(Object element) { return element.toString(); } }); content = new String[getBuildBlock().getAvailableSamples().size()]; int i = 0; for (String currentSample : getBuildBlock().getAvailableSamples().keySet()) { content[i] = currentSample; i++; } treeViewer.setContentProvider(new SampleTreeContentProvider(content)); treeViewer.setInput(content); final Group intentFilterGroup = new Group(mainComposite, SWT.NONE); treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent e) { String selection = e.getSelection().toString(); getBuildBlock().setSample(selection.substring(1, selection.length() - 1)); getBuildBlock() .setSampleCategoty(ActivityBasedOnTemplate.SAMPLE_CATEGORY.SAMPLE_ACTIVITIES_CATEGORY); if (selection.substring(1, selection.length() - 1) .equals(ActivityBasedOnTemplate.DATABASE_LIST_SAMPLE_LOCALIZED)) { getBuildBlock().setDatabaseTemplateSelected(true); } else { getBuildBlock().setDatabaseTemplateSelected(false); } canFlip = true; updateDescriptionPane(); getWizard().getContainer().updateButtons(); } }); treeViewer.setComparator(new ViewerComparator()); treeViewer.expandAll(); intentFilterGroup.setText(CodeUtilsNLS.UI_SampleSelectionPage_SamplesDescriptionPane); intentFilterGroup.setLayout(new GridLayout(1, false)); intentFilterGroup.setLayoutData(new GridData(GridData.FILL, GridData.BEGINNING, true, false)); ScrolledComposite scrolledArea = new ScrolledComposite(intentFilterGroup, SWT.V_SCROLL); GridData descriptionLabelData = new GridData(GridData.FILL, GridData.FILL, true, true); descriptionLabelData.heightHint = 140; scrolledArea.setLayoutData(descriptionLabelData); descriptionLabel = new Label(scrolledArea, SWT.FILL | SWT.WRAP); descriptionLabel.setText(""); scrolledArea.setContent(descriptionLabel); descriptionLabel.setSize(descriptionLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT)); // Add a listener to the wizard to listen for page changes if (getContainer() instanceof IPageChangeProvider) { ((IPageChangeProvider) getContainer()).addPageChangedListener(new PageChangeListener()); } setControl(mainComposite); } /* * Updates selected label description. */ private void updateDescriptionPane() { descriptionLabel.setText(getBuildBlock().getSampleDescription()); // descriptionLabel.setVisible(true); descriptionLabel.setSize(descriptionLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT)); descriptionLabel.update(); descriptionLabel.getParent().update(); } /* (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getDefaultMessage() */ @Override public String getDefaultMessage() { return CodeUtilsNLS.UI_NewActivityMainPage_DescriptionCreateActivityBasedOnTemplate; } /* (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getWizardTitle() */ @Override public String getWizardTitle() { return CodeUtilsNLS.UI_NewActivityMainPage_TitleActivityBasedOnTemplate; } /* (non-Javadoc) * @see com.motorola.studio.android.wizards.buildingblocks.NewLauncherWizardPage#getIntentFiltersActions() */ @Override protected String[] getIntentFiltersActions() { String[] intentFiltersActions = new String[0]; try { intentFiltersActions = AndroidUtils.getActivityActions(getBuildBlock().getProject()); } catch (AndroidException e) { setErrorMessage(e.getMessage()); } return intentFiltersActions; } /** * Gets the help ID to be used for attaching * context sensitive help. * * Classes that extends this class and want to set * their on help should override this method */ @Override protected String getHelpId() { return NEW_ACTIVITY_BASED_ON_TEMPLATE_HELP; } /** * Returns true if page has header false otherwise * * @return true if page has header false otherwise */ @Override public boolean hasHeader() { return false; } } /** * Fills tree viewer with sample options */ class SampleTreeContentProvider extends ArrayContentProvider implements ITreeContentProvider { Object[] elements; public SampleTreeContentProvider(Object[] elements) { this.elements = elements; } @Override public Object[] getElements(Object inputElement) { return elements; } public Object[] getChildren(Object parentElement) { return new Object[0]; } public Object getParent(Object element) { return new Object[0]; } public boolean hasChildren(Object element) { return false; } }