diff options
Diffstat (limited to 'eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/project/SupportLibraryHelper.java')
| -rw-r--r-- | eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/project/SupportLibraryHelper.java | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/project/SupportLibraryHelper.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/project/SupportLibraryHelper.java new file mode 100644 index 000000000..e1819b283 --- /dev/null +++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/project/SupportLibraryHelper.java @@ -0,0 +1,176 @@ +/* + * 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; + } +} |