LayoutInflater_Delegatepublic class LayoutInflater_Delegate extends Object | Delegate used to provide new implementation of a select few methods of {@link LayoutInflater}
Through the layoutlib_create tool, the original methods of LayoutInflater have been replaced
by calls to methods of the same name in this delegate class. |
| Fields Summary |
|---|
| private static final String | TAG_MERGE | | public static boolean | sIsInInclude |
| Methods Summary |
|---|
| public static void | parseInclude(LayoutInflater thisInflater, org.xmlpull.v1.XmlPullParser parser, View parent, android.util.AttributeSet attrs, boolean inheritContext)
int type;
if (parent instanceof ViewGroup) {
final int layout = attrs.getAttributeResourceValue(null, "layout", 0);
if (layout == 0) {
final String value = attrs.getAttributeValue(null, "layout");
if (value == null) {
throw new InflateException("You must specifiy a layout in the"
+ " include tag: <include layout=\"@layout/layoutID\" />");
} else {
throw new InflateException("You must specifiy a valid layout "
+ "reference. The layout ID " + value + " is not valid.");
}
} else {
final XmlResourceParser childParser =
thisInflater.getContext().getResources().getLayout(layout);
try {
final AttributeSet childAttrs = Xml.asAttributeSet(childParser);
while ((type = childParser.next()) != XmlPullParser.START_TAG &&
type != XmlPullParser.END_DOCUMENT) {
// Empty.
}
if (type != XmlPullParser.START_TAG) {
throw new InflateException(childParser.getPositionDescription() +
": No start tag found!");
}
final String childName = childParser.getName();
if (TAG_MERGE.equals(childName)) {
// Inflate all children.
thisInflater.rInflate(childParser, parent, childAttrs, false,
inheritContext);
} else {
final View view = thisInflater.createViewFromTag(parent, childName,
childAttrs, inheritContext);
final ViewGroup group = (ViewGroup) parent;
// We try to load the layout params set in the <include /> tag. If
// they don't exist, we will rely on the layout params set in the
// included XML file.
// During a layoutparams generation, a runtime exception is thrown
// if either layout_width or layout_height is missing. We catch
// this exception and set localParams accordingly: true means we
// successfully loaded layout params from the <include /> tag,
// false means we need to rely on the included layout params.
ViewGroup.LayoutParams params = null;
try {
// ---- START CHANGES
sIsInInclude = true;
// ---- END CHANGES
params = group.generateLayoutParams(attrs);
} catch (RuntimeException e) {
// ---- START CHANGES
sIsInInclude = false;
// ---- END CHANGES
params = group.generateLayoutParams(childAttrs);
} finally {
// ---- START CHANGES
sIsInInclude = false;
// ---- END CHANGES
if (params != null) {
view.setLayoutParams(params);
}
}
// Inflate all children.
thisInflater.rInflate(childParser, view, childAttrs, true, true);
// Attempt to override the included layout's android:id with the
// one set on the <include /> tag itself.
TypedArray a = thisInflater.mContext.obtainStyledAttributes(attrs,
com.android.internal.R.styleable.View, 0, 0);
int id = a.getResourceId(com.android.internal.R.styleable.View_id, View.NO_ID);
// While we're at it, let's try to override android:visibility.
int visibility = a.getInt(com.android.internal.R.styleable.View_visibility, -1);
a.recycle();
if (id != View.NO_ID) {
view.setId(id);
}
switch (visibility) {
case 0:
view.setVisibility(View.VISIBLE);
break;
case 1:
view.setVisibility(View.INVISIBLE);
break;
case 2:
view.setVisibility(View.GONE);
break;
}
group.addView(view);
}
} finally {
childParser.close();
}
}
} else {
throw new InflateException("<include /> can only be used inside of a ViewGroup");
}
final int currentDepth = parser.getDepth();
while (((type = parser.next()) != XmlPullParser.END_TAG ||
parser.getDepth() > currentDepth) && type != XmlPullParser.END_DOCUMENT) {
// Empty
}
| | static void | rInflate(LayoutInflater thisInflater, org.xmlpull.v1.XmlPullParser parser, View parent, android.util.AttributeSet attrs, boolean finishInflate, boolean inheritContext)Recursive method used to descend down the xml hierarchy and instantiate
views, instantiate their children, and then call onFinishInflate().
This implementation just records the merge status before calling the default implementation.
/* package */
if (finishInflate == false) {
// this is a merge rInflate!
if (thisInflater instanceof BridgeInflater) {
((BridgeInflater) thisInflater).setIsInMerge(true);
}
}
// ---- START DEFAULT IMPLEMENTATION.
thisInflater.rInflate_Original(parser, parent, attrs, finishInflate, inheritContext);
// ---- END DEFAULT IMPLEMENTATION.
if (finishInflate == false) {
// this is a merge rInflate!
if (thisInflater instanceof BridgeInflater) {
((BridgeInflater) thisInflater).setIsInMerge(false);
}
}
|
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