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 org.eclipse.andmore.wizards.buildingblocks; import java.net.URL; import org.eclipse.andmore.android.codeutils.CodeUtilsActivator; import org.eclipse.andmore.android.codeutils.i18n.CodeUtilsNLS; import org.eclipse.andmore.android.common.exception.AndroidException; import org.eclipse.andmore.android.common.utilities.AndroidUtils; import org.eclipse.andmore.android.model.ActivityBasedOnTemplate; import org.eclipse.core.runtime.FileLocator; import org.eclipse.core.runtime.IPath; 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.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; 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 org.eclipse.ui.plugin.AbstractUIPlugin; /** * New activity wizard sample page. */ public class NewActivityWizardListTemplatesPage extends NewLauncherWizardPage { private TreeViewer treeViewer; private Label imgLabel; private Label descriptionLabel; private String content[]; private static final String NEW_ACTIVITY_HELP = CodeUtilsActivator.PLUGIN_ID + ".newactivity"; private static Image androidImg = null; public static final String PAGE_NAME = "List Activities Page"; // private boolean canFlip = false; /* * Listener to update description pane whenever this page is open */ private class PageChangeListener implements IPageChangedListener { @Override public void pageChanged(PageChangedEvent event) { if ((event.getSelectedPage() == NewActivityWizardListTemplatesPage.this)) { if (!treeViewer.getSelection().isEmpty()) { updateTreeViewAfterSelection(treeViewer.getSelection()); } NewActivityWizardListTemplatesPage.this.getControl().update(); ((NewActivityWizardListTemplatesPage) event.getSelectedPage()).updateDescriptionPane(); } } } protected NewActivityWizardListTemplatesPage(ActivityBasedOnTemplate activity) { super(activity, PAGE_NAME); activity.evaluateSamplesList(ActivityBasedOnTemplate.SAMPLE_CATEGORY.LIST_ACTIVITIES_CATEGORY); ImageDescriptor descr = AbstractUIPlugin.imageDescriptorFromPlugin(CodeUtilsActivator.PLUGIN_ID, "icons/device_refresh_on.png"); androidImg = descr.createImage(); } /* * (non-Javadoc) */ @Override public boolean canFlipToNextPage() { return getBuildBlock().isListActivitySelected(); } @Override public IWizardPage getNextPage() { return this.getWizard().getPage(CodeUtilsNLS.UI_NewActivityMainPage_PageTitle); } @Override public IWizardPage getPreviousPage() { return this.getWizard().getPage(ActivitySampleSelectionPage.PAGE_NAME); } /* * (non-Javadoc) * * @see * org.eclipse.andmore.android.wizards.buildingblocks.NewBuildingBlocksWizard * #getBuildBlock() */ @Override public ActivityBasedOnTemplate getBuildBlock() { return (ActivityBasedOnTemplate) super.getBuildBlock(); } /* * (non-Javadoc) * * @see org.eclipse.andmore.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 org.eclipse.andmore.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(2, false)); mainComposite.setLayoutData(new GridData(GridData.FILL_BOTH)); // Samples Tree Label Label itemsTableLabel = new Label(mainComposite, SWT.NONE); itemsTableLabel.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, false, 2, 1)); 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, 1, 1)); 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().getListActivitiesSamples().size()]; int i = 0; for (String currentSample : getBuildBlock().getListActivitiesSamples().keySet()) { content[i] = currentSample; i++; } // sets tree content and icon treeViewer.setContentProvider(new SampleTreeContentProvider(content)); treeViewer.setInput(content); final Group previewGroup = new Group(mainComposite, SWT.NONE); previewGroup.setText(CodeUtilsNLS.UI_ListActivityPage_Preview); previewGroup.setLayout(new GridLayout(1, false)); previewGroup.setLayoutData(new GridData(GridData.FILL, GridData.FILL, false, true, 1, 1)); imgLabel = new Label(previewGroup, SWT.NONE); imgLabel.setImage(null); GridData imageLabelData = new GridData(GridData.FILL, GridData.FILL, true, true); imageLabelData.widthHint = 200; imgLabel.setLayoutData(imageLabelData); final Group descriptionGroup = new Group(mainComposite, SWT.NONE); treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent e) { updateTreeViewAfterSelection(e.getSelection()); updateDescriptionPane(); getWizard().getContainer().updateButtons(); } }); // sort tree treeViewer.setComparator(new ViewerComparator()); treeViewer.expandAll(); // description pane descriptionGroup.setText(CodeUtilsNLS.UI_SampleSelectionPage_SamplesDescriptionPane); descriptionGroup.setLayout(new GridLayout(1, false)); descriptionGroup.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false, 2, 1)); ScrolledComposite scroll = new ScrolledComposite(descriptionGroup, SWT.V_SCROLL); GridData scrollData = new GridData(GridData.FILL, GridData.FILL, true, true); scroll.setLayoutData(scrollData); scroll.setMinSize(100, 140); descriptionLabel = new Label(scroll, SWT.FILL | SWT.WRAP); descriptionLabel.setText(""); scroll.setContent(descriptionLabel); // Add a listener to the wizard to listen for page changes if (getContainer() instanceof IPageChangeProvider) { ((IPageChangeProvider) getContainer()).addPageChangedListener(new PageChangeListener()); } setControl(mainComposite); } private void updateTreeViewAfterSelection(ISelection selection) { String template = selection.toString(); getBuildBlock().setSample(template.substring(1, template.length() - 1)); // condition to enable finish button getBuildBlock().setIsListActivitySelected(true); // category of sample, used to load the correct files getBuildBlock().setSampleCategoty(ActivityBasedOnTemplate.SAMPLE_CATEGORY.LIST_ACTIVITIES_CATEGORY); String strPreview = getBuildBlock().getSamplePreview(); if (strPreview != null) { URL url = null; try { // loads the selected sample preview image url = FileLocator.toFileURL(CodeUtilsActivator.getDefault().getBundle() .getEntry(ActivityBasedOnTemplate.ACTIVITY_SAMPLES_FOLDER + IPath.SEPARATOR + strPreview)); ImageDescriptor imageDesc = ImageDescriptor.createFromURL(url); Image image = imageDesc.createImage(); Image previousImage = imgLabel.getImage(); if (previousImage != null) { previousImage.dispose(); } imgLabel.setImage(image); } catch (Exception ex) { imgLabel.setImage(null); } } else { imgLabel.setImage(null); } } /* * Updates selected label description */ private void updateDescriptionPane() { if (getBuildBlock().isListActivitySelected()) { descriptionLabel.setText(getBuildBlock().getSampleDescription()); } else { descriptionLabel.setText(""); imgLabel.setImage(null); } descriptionLabel.update(); descriptionLabel.setSize(descriptionLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT)); descriptionLabel.getParent().layout(); } /* * (non-Javadoc) * * @see org.eclipse.andmore.android.wizards.buildingblocks. * NewBuildingBlocksWizardPage#getDefaultMessage() */ @Override public String getDefaultMessage() { return CodeUtilsNLS.UI_NewActivityMainPage_DescriptionCreateActivityBasedOnTemplate; } /* * (non-Javadoc) * * @see org.eclipse.andmore.android.wizards.buildingblocks. * NewBuildingBlocksWizardPage#getWizardTitle() */ @Override public String getWizardTitle() { return CodeUtilsNLS.UI_ListActivityPage_TitleWizard; } /* * (non-Javadoc) * * @see * org.eclipse.andmore.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_HELP; } /** * Returns true if page has header false otherwise * * @return true if page has header false otherwise */ @Override public boolean hasHeader() { return false; } }