@Override
protected void unregisterAllModelChangedObserversInDescendants() {
if (mRootLayout != null) {
mRootLayout.unregisterAllModelChangedObservers();
}
if (mImageRegion != null) {
mImageRegion.unregisterAllModelChangedObservers();
}
if (mTextRegion != null) {
mTextRegion.unregisterAllModelChangedObservers();
}
}
@Override
protected void registerModelChangedObserverInDescendants(IModelChangedObserver observer) {
if (mRootLayout != null) {
mRootLayout.registerModelChangedObserver(observer);
}
if (mImageRegion != null) {
mImageRegion.registerModelChangedObserver(observer);
}
if (mTextRegion != null) {
mTextRegion.registerModelChangedObserver(observer);
}
}
private void createDefaultImageRegion() {
if (mRootLayout == null) {
throw new IllegalStateException("Root-Layout uninitialized.");
}
mImageRegion =
new RegionModel(
IMAGE_REGION_ID, 0, 0, mRootLayout.getWidth(), mLayoutParams.getImageHeight());
}
public RegionModel findRegionById(String rId) {
if (IMAGE_REGION_ID.equals(rId)) {
return mImageRegion;
} else if (TEXT_REGION_ID.equals(rId)) {
return mTextRegion;
} else {
for (RegionModel r : mNonStdRegions) {
if (r.getRegionId().equals(rId)) {
return r;
}
}
if (LOCAL_LOGV) {
Log.v(TAG, "Region not found: " + rId);
}
return null;
}
}
public LayoutModel(RegionModel rootLayout, ArrayList<RegionModel> regions) {
mLayoutParams = LayoutManager.getInstance().getLayoutParameters();
mRootLayout = rootLayout;
mNonStdRegions = new ArrayList<RegionModel>();
for (RegionModel r : regions) {
String rId = r.getRegionId();
if (rId.equals(IMAGE_REGION_ID)) {
mImageRegion = r;
} else if (rId.equals(TEXT_REGION_ID)) {
mTextRegion = r;
} else {
if (LOCAL_LOGV) {
Log.v(TAG, "Found non-standard region: " + rId);
}
mNonStdRegions.add(r);
}
}
validateLayouts();
}
public void changeTo(int layout) {
if (mRootLayout == null) {
throw new IllegalStateException("Root-Layout uninitialized.");
}
if (mLayoutParams == null) {
mLayoutParams = LayoutManager.getInstance().getLayoutParameters();
}
if (mLayoutType != layout) {
switch (layout) {
case LAYOUT_BOTTOM_TEXT:
{
mImageRegion.setTop(0);
mTextRegion.setTop(mLayoutParams.getImageHeight());
mLayoutType = layout;
notifyModelChanged(true);
}
break;
case LAYOUT_TOP_TEXT:
{
mImageRegion.setTop(mLayoutParams.getTextHeight());
mTextRegion.setTop(0);
mLayoutType = layout;
notifyModelChanged(true);
}
break;
default:
{
Log.w(TAG, "Unknown layout type: " + layout);
}
}
} else {
if (LOCAL_LOGV) {
Log.v(TAG, "Skip changing layout.");
}
}
}
private void validateLayouts() {
if (mRootLayout == null) {
createDefaultRootLayout();
}
if (mImageRegion == null) {
createDefaultImageRegion();
}
if (mTextRegion == null) {
createDefaultTextRegion();
}
// LayoutModel will re-construct when orientation changes, so we need to
// initialize mLayoutType here. Otherwise, the mLayoutType is alway default
// value (LAYOUT_BOTTOM_TEXT) after LayoutModel re-construct.
mLayoutType = (mImageRegion.getTop() == 0) ? LAYOUT_BOTTOM_TEXT : LAYOUT_TOP_TEXT;
}
public String getBackgroundColor() {
return mRootLayout.getBackgroundColor();
}
public int getLayoutHeight() {
return mRootLayout.getHeight();
}
public int getLayoutWidth() {
return mRootLayout.getWidth();
}
