| /* |
| * Copyright (C) 2012 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.project; |
| |
| import static com.android.SdkConstants.FQCN_GRID_LAYOUT; |
| import static com.android.SdkConstants.FQCN_GRID_LAYOUT_V7; |
| import static com.android.SdkConstants.FQCN_SPACE; |
| import static com.android.SdkConstants.FQCN_SPACE_V7; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.android.ide.eclipse.adt.AdtUtils; |
| import com.android.ide.eclipse.adt.internal.actions.AddSupportJarAction; |
| import com.android.ide.eclipse.adt.internal.editors.manifest.ManifestInfo; |
| import com.android.ide.eclipse.adt.internal.sdk.ProjectState; |
| import com.android.ide.eclipse.adt.internal.sdk.ProjectState.LibraryState; |
| import com.android.ide.eclipse.adt.internal.sdk.Sdk; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.swt.widgets.Display; |
| |
| /** |
| * Helper class for the Android Support Library. The support library provides |
| * (for example) a backport of GridLayout, which must be used as a library |
| * project rather than a jar library since it has resources. This class provides |
| * support for finding the library project, or downloading and installing it on |
| * demand if it does not, as well as translating tags such as |
| * {@code <GridLayout>} into {@code <com.android.support.v7.GridLayout>} if it |
| * does not. |
| */ |
| public class SupportLibraryHelper { |
| /** |
| * Returns the correct tag to use for the given view tag. This is normally |
| * the same as the tag itself. However, for some views which are not available |
| * on all platforms, this will: |
| * <ul> |
| * <li> Check if the view is available in the compatibility library, |
| * and if so, if the support library is not installed, will offer to |
| * install it via the SDK manager. |
| * <li> (The tool may also offer to adjust the minimum SDK of the project |
| * up to a level such that the given tag is supported directly, and then |
| * this method will return the original tag.) |
| * <li> Check whether the compatibility library is included in the project, and |
| * if not, offer to copy it into the workspace and add a library dependency. |
| * <li> Return the alternative tag. For example, for "GridLayout", it will |
| * (if the minimum SDK is less than 14) return "com.android.support.v7.GridLayout" |
| * instead. |
| * </ul> |
| * |
| * @param project the project to add the dependency into |
| * @param tag the tag to look up, such as "GridLayout" |
| * @return the tag to use in the layout, normally the same as the input tag but possibly |
| * an equivalent compatibility library tag instead. |
| */ |
| @NonNull |
| public static String getTagFor(@NonNull IProject project, @NonNull String tag) { |
| boolean isGridLayout = tag.equals(FQCN_GRID_LAYOUT); |
| boolean isSpace = tag.equals(FQCN_SPACE); |
| if (isGridLayout || isSpace) { |
| int minSdk = ManifestInfo.get(project).getMinSdkVersion(); |
| if (minSdk < 14) { |
| // See if the support library is installed in the SDK area |
| // See if there is a local project in the workspace providing the |
| // project |
| IProject supportProject = getSupportProjectV7(); |
| if (supportProject != null) { |
| // Make sure I have a dependency on it |
| ProjectState state = Sdk.getProjectState(project); |
| if (state != null) { |
| for (LibraryState library : state.getLibraries()) { |
| if (supportProject.equals(library.getProjectState().getProject())) { |
| // Found it: you have the compatibility library and have linked |
| // to it: use the alternative tag |
| return isGridLayout ? FQCN_GRID_LAYOUT_V7 : FQCN_SPACE_V7; |
| } |
| } |
| } |
| } |
| |
| // Ask user to install it |
| String message = String.format( |
| "%1$s requires API level 14 or higher, or a compatibility " |
| + "library for older versions.\n\n" |
| + " Do you want to install the compatibility library?", tag); |
| MessageDialog dialog = |
| new MessageDialog( |
| Display.getCurrent().getActiveShell(), |
| "Warning", |
| null, |
| message, |
| MessageDialog.QUESTION, |
| new String[] { |
| "Install", "Cancel" |
| }, |
| 1 /* default button: Cancel */); |
| int answer = dialog.open(); |
| if (answer == 0) { |
| if (supportProject != null) { |
| // Just add library dependency |
| if (!AddSupportJarAction.addLibraryDependency( |
| supportProject, |
| project, |
| true /* waitForFinish */)) { |
| return tag; |
| } |
| } else { |
| // Install library AND add dependency |
| if (!AddSupportJarAction.installGridLayoutLibrary( |
| project, |
| true /* waitForFinish */)) { |
| return tag; |
| } |
| } |
| |
| return isGridLayout ? FQCN_GRID_LAYOUT_V7 : FQCN_SPACE_V7; |
| } |
| } |
| } |
| |
| return tag; |
| } |
| |
| /** Cache for {@link #getSupportProjectV7()} */ |
| private static IProject sCachedProject; |
| |
| /** |
| * Finds and returns the support project in the workspace, if any. |
| * |
| * @return the android support library project, or null if not found |
| */ |
| @Nullable |
| public static IProject getSupportProjectV7() { |
| if (sCachedProject != null) { |
| if (sCachedProject.isAccessible()) { |
| return sCachedProject; |
| } else { |
| sCachedProject = null; |
| } |
| } |
| |
| sCachedProject = findSupportProjectV7(); |
| return sCachedProject; |
| } |
| |
| @Nullable |
| private static IProject findSupportProjectV7() { |
| for (IJavaProject javaProject : AdtUtils.getOpenAndroidProjects()) { |
| IProject project = javaProject.getProject(); |
| ProjectState state = Sdk.getProjectState(project); |
| if (state != null && state.isLibrary()) { |
| ManifestInfo manifestInfo = ManifestInfo.get(project); |
| if (manifestInfo.getPackage().equals("android.support.v7.gridlayout")) { //$NON-NLS-1$ |
| return project; |
| } |
| } |
| } |
| |
| return null; |
| } |
| } |
