Merge change 4544 into donut (47a67ebc) · Commits · e / os / android_frameworks_base

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/Bridge.java

+180 −74

Original line number	Diff line number	Diff line
		@@ -55,6 +55,8 @@ import android.view.View.AttachInfo;
		import android.view.View.MeasureSpec;
		import android.view.WindowManager.LayoutParams;
		import android.widget.FrameLayout;
		import android.widget.TabHost;
		import android.widget.TabWidget;

		import java.lang.ref.SoftReference;
		import java.lang.reflect.Field;
		@@ -82,15 +84,16 @@ public final class Bridge implements ILayoutBridge {
		}

		/**
		* Maps from id to resource name/type.
		* Maps from id to resource name/type. This is for android.R only.
		*/
		private final static Map<Integer, String[]> sRMap = new HashMap<Integer, String[]>();
		/**
		* Same as sRMap except for int[] instead of int resources.
		* Same as sRMap except for int[] instead of int resources. This is for android.R only.
		*/
		private final static Map<int[], String> sRArrayMap = new HashMap<int[], String>();
		/**
		* Reverse map compared to sRMap, resource type -> (resource name -> id)
		* Reverse map compared to sRMap, resource type -> (resource name -> id).
		* This is for android.R only.
		*/
		private final static Map<String, Map<String, Integer>> sRFullMap =
		new HashMap<String, Map<String,Integer>>();
		@@ -294,6 +297,7 @@ public final class Bridge implements ILayoutBridge {
		* (non-Javadoc)
		* @see com.android.layoutlib.api.ILayoutBridge#computeLayout(com.android.layoutlib.api.IXmlPullParser, java.lang.Object, int, int, java.lang.String, boolean, java.util.Map, java.util.Map, com.android.layoutlib.api.IProjectCallback, com.android.layoutlib.api.ILayoutLog)
		*/
		@Deprecated
		public ILayoutResult computeLayout(IXmlPullParser layoutDescription, Object projectKey,
		int screenWidth, int screenHeight, String themeName, boolean isProjectTheme,
		Map<String, Map<String, IResourceValue>> projectResources,
		@@ -370,6 +374,9 @@ public final class Bridge implements ILayoutBridge {

		View view = inflater.inflate(parser, root);

		// post-inflate process. For now this supports TabHost/TabWidget
		postInflateProcess(view, customViewLoader);

		// set the AttachInfo on the root view.
		AttachInfo info = new AttachInfo(new WindowSession(), new Window(),
		new Handler(), null);
		@@ -402,6 +409,9 @@ public final class Bridge implements ILayoutBridge {

		return new LayoutResult(visit(((ViewGroup)view).getChildAt(0), context),
		canvas.getImage());
		} catch (PostInflateException e) {
		return new LayoutResult(ILayoutResult.ERROR, "Error during post inflation process:\n"
		+ e.getMessage());
		} catch (Throwable e) {
		// get the real cause of the exception.
		Throwable t = e;
		@@ -710,6 +720,94 @@ public final class Bridge implements ILayoutBridge {
		return offset;
		}

		/**
		* Post process on a view hierachy that was just inflated.
		* <p/>At the moment this only support TabHost: If {@link TabHost} is detected, look for the
		* {@link TabWidget}, and the corresponding {@link FrameLayout} and make new tabs automatically
		* based on the content of the {@link FrameLayout}.
		* @param view the root view to process.
		* @param projectCallback callback to the project.
		*/
		private void postInflateProcess(View view, IProjectCallback projectCallback)
		throws PostInflateException {
		if (view instanceof TabHost) {
		setupTabHost((TabHost)view, projectCallback);
		} else if (view instanceof ViewGroup) {
		ViewGroup group = (ViewGroup)view;
		final int count = group.getChildCount();
		for (int c = 0 ; c < count ; c++) {
		View child = group.getChildAt(c);
		postInflateProcess(child, projectCallback);
		}
		}
		}

		/**
		* Sets up a {@link TabHost} object.
		* @param tabHost the TabHost to setup.
		* @param projectCallback The project callback object to access the project R class.
		* @throws PostInflateException
		*/
		private void setupTabHost(TabHost tabHost, IProjectCallback projectCallback)
		throws PostInflateException {
		// look for the TabWidget, and the FrameLayout. They have their own specific names
		View v = tabHost.findViewById(android.R.id.tabs);

		if (v == null) {
		throw new PostInflateException(
		"TabHost requires a TabWidget with id \"android:id/tabs\".\n");
		}

		if ((v instanceof TabWidget) == false) {
		throw new PostInflateException(String.format(
		"TabHost requires a TabWidget with id \"android:id/tabs\".\n" +
		"View found with id 'tabs' is '%s'", v.getClass().getCanonicalName()));
		}

		v = tabHost.findViewById(android.R.id.tabcontent);

		if (v == null) {
		// TODO: see if we can fake tabs even without the FrameLayout (same below when the framelayout is empty)
		throw new PostInflateException(
		"TabHost requires a FrameLayout with id \"android:id/tabcontent\".");
		}

		if ((v instanceof FrameLayout) == false) {
		throw new PostInflateException(String.format(
		"TabHost requires a FrameLayout with id \"android:id/tabcontent\".\n" +
		"View found with id 'tabcontent' is '%s'", v.getClass().getCanonicalName()));
		}

		FrameLayout content = (FrameLayout)v;

		// now process the content of the framelayout and dynamically create tabs for it.
		final int count = content.getChildCount();

		if (count == 0) {
		throw new PostInflateException(
		"The FrameLayout for the TabHost has no content. Rendering failed.\n");
		}

		// this must be called before addTab() so that the TabHost searches its TabWidget
		// and FrameLayout.
		tabHost.setup();

		// for each child of the framelayout, add a new TabSpec
		for (int i = 0 ; i < count ; i++) {
		View child = content.getChildAt(i);
		String tabSpec = String.format("tab_spec%d", i+1);
		int id = child.getId();
		String[] resource = projectCallback.resolveResourceValue(id);
		String name;
		if (resource != null) {
		name = resource[0]; // 0 is resource name, 1 is resource type.
		} else {
		name = String.format("Tab %d", i+1); // default name if id is unresolved.
		}
		tabHost.addTab(tabHost.newTabSpec(tabSpec).setIndicator(name).setContent(id));
		}
		}

		/**
		* Returns the bitmap for a specific path, from a specific project cache, or from the
		* framework cache.
		@@ -805,6 +903,14 @@ public final class Bridge implements ILayoutBridge {
		}
		}

		private static final class PostInflateException extends Exception {
		private static final long serialVersionUID = 1L;

		public PostInflateException(String message) {
		super(message);
		}
		}

		/**
		* Implementation of {@link IWindowSession} so that mSession is not null in
		* the {@link SurfaceView}.