import android.view.ViewGroup;
import android.view.ViewOverlay;
import android.widget.ListView;
+import android.widget.Spinner;
import java.util.ArrayList;
import java.util.List;
TimeInterpolator mInterpolator = null;
ArrayList<Integer> mTargetIds = new ArrayList<Integer>();
ArrayList<View> mTargets = new ArrayList<View>();
+ ArrayList<Integer> mTargetIdExcludes = null;
+ ArrayList<View> mTargetExcludes = null;
+ ArrayList<Class> mTargetTypeExcludes = null;
+ ArrayList<Integer> mTargetIdChildExcludes = null;
+ ArrayList<View> mTargetChildExcludes = null;
+ ArrayList<Class> mTargetTypeChildExcludes = null;
private TransitionValuesMaps mStartValues = new TransitionValuesMaps();
private TransitionValuesMaps mEndValues = new TransitionValuesMaps();
TransitionSet mParent = null;
Log.d(LOG_TAG, " differing start/end values for view " +
view);
if (start == null || end == null) {
- if (start == null) {
- Log.d(LOG_TAG, " " + ((start == null) ?
- "start null, end non-null" : "start non-null, end null"));
- }
+ Log.d(LOG_TAG, " " + ((start == null) ?
+ "start null, end non-null" : "start non-null, end null"));
} else {
for (String key : start.values.keySet()) {
Object startValue = start.values.get(key);
* views are ignored and only the ids are used).
*/
boolean isValidTarget(View target, long targetId) {
+ if (mTargetIdExcludes != null && mTargetIdExcludes.contains(targetId)) {
+ return false;
+ }
+ if (mTargetExcludes != null && mTargetExcludes.contains(target)) {
+ return false;
+ }
+ if (mTargetTypeExcludes != null && target != null) {
+ int numTypes = mTargetTypeExcludes.size();
+ for (int i = 0; i < numTypes; ++i) {
+ Class type = mTargetTypeExcludes.get(i);
+ if (type.isInstance(target)) {
+ return false;
+ }
+ }
+ }
if (mTargetIds.size() == 0 && mTargets.size() == 0) {
return true;
}
* @return The Transition to which the targetId is added.
* Returning the same object makes it easier to chain calls during
* construction, such as
- * <code>transitionSet.addTransitions(new Fade()).addTargetId(someId);</code>
+ * <code>transitionSet.addTransitions(new Fade()).addTarget(someId);</code>
*/
- public Transition addTargetId(int targetId) {
+ public Transition addTarget(int targetId) {
if (targetId > 0) {
mTargetIds.add(targetId);
}
* construction, such as
* <code>transitionSet.addTransitions(new Fade()).removeTargetId(someId);</code>
*/
- public Transition removeTargetId(int targetId) {
+ public Transition removeTarget(int targetId) {
if (targetId > 0) {
mTargetIds.remove(targetId);
}
}
/**
+ * Whether to add the given id to the list of target ids to exclude from this
+ * transition. The <code>exclude</code> parameter specifies whether the target
+ * should be added to or removed from the excluded list.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeChildren(int, boolean)
+ * @see #excludeTarget(View, boolean)
+ * @see #excludeTarget(Class, boolean)
+ *
+ * @param targetId The id of a target to ignore when running this transition.
+ * @param exclude Whether to add the target to or remove the target from the
+ * current list of excluded targets.
+ * @return This transition object.
+ */
+ public Transition excludeTarget(int targetId, boolean exclude) {
+ mTargetIdExcludes = excludeId(mTargetIdExcludes, targetId, exclude);
+ return this;
+ }
+
+ /**
+ * Whether to add the children of the given id to the list of targets to exclude
+ * from this transition. The <code>exclude</code> parameter specifies whether
+ * the children of the target should be added to or removed from the excluded list.
+ * Excluding children in this way provides a simple mechanism for excluding all
+ * children of specific targets, rather than individually excluding each
+ * child individually.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeTarget(int, boolean)
+ * @see #excludeChildren(View, boolean)
+ * @see #excludeChildren(Class, boolean)
+ *
+ * @param targetId The id of a target whose children should be ignored when running
+ * this transition.
+ * @param exclude Whether to add the target to or remove the target from the
+ * current list of excluded-child targets.
+ * @return This transition object.
+ */
+ public Transition excludeChildren(int targetId, boolean exclude) {
+ mTargetIdChildExcludes = excludeId(mTargetIdChildExcludes, targetId, exclude);
+ return this;
+ }
+
+ /**
+ * Utility method to manage the boilerplate code that is the same whether we
+ * are excluding targets or their children.
+ */
+ private ArrayList<Integer> excludeId(ArrayList<Integer> list, int targetId, boolean exclude) {
+ if (targetId > 0) {
+ if (exclude) {
+ list = ArrayListManager.add(list, targetId);
+ } else {
+ list = ArrayListManager.remove(list, targetId);
+ }
+ }
+ return list;
+ }
+
+ /**
+ * Whether to add the given target to the list of targets to exclude from this
+ * transition. The <code>exclude</code> parameter specifies whether the target
+ * should be added to or removed from the excluded list.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeChildren(View, boolean)
+ * @see #excludeTarget(int, boolean)
+ * @see #excludeTarget(Class, boolean)
+ *
+ * @param target The target to ignore when running this transition.
+ * @param exclude Whether to add the target to or remove the target from the
+ * current list of excluded targets.
+ * @return This transition object.
+ */
+ public Transition excludeTarget(View target, boolean exclude) {
+ mTargetExcludes = excludeView(mTargetExcludes, target, exclude);
+ return this;
+ }
+
+ /**
+ * Whether to add the children of given target to the list of target children
+ * to exclude from this transition. The <code>exclude</code> parameter specifies
+ * whether the target should be added to or removed from the excluded list.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeTarget(View, boolean)
+ * @see #excludeChildren(int, boolean)
+ * @see #excludeChildren(Class, boolean)
+ *
+ * @param target The target to ignore when running this transition.
+ * @param exclude Whether to add the target to or remove the target from the
+ * current list of excluded targets.
+ * @return This transition object.
+ */
+ public Transition excludeChildren(View target, boolean exclude) {
+ mTargetChildExcludes = excludeView(mTargetChildExcludes, target, exclude);
+ return this;
+ }
+
+ /**
+ * Utility method to manage the boilerplate code that is the same whether we
+ * are excluding targets or their children.
+ */
+ private ArrayList<View> excludeView(ArrayList<View> list, View target, boolean exclude) {
+ if (target != null) {
+ if (exclude) {
+ list = ArrayListManager.add(list, target);
+ } else {
+ list = ArrayListManager.remove(list, target);
+ }
+ }
+ return list;
+ }
+
+ /**
+ * Whether to add the given type to the list of types to exclude from this
+ * transition. The <code>exclude</code> parameter specifies whether the target
+ * type should be added to or removed from the excluded list.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeChildren(Class, boolean)
+ * @see #excludeTarget(int, boolean)
+ * @see #excludeTarget(View, boolean)
+ *
+ * @param type The type to ignore when running this transition.
+ * @param exclude Whether to add the target type to or remove it from the
+ * current list of excluded target types.
+ * @return This transition object.
+ */
+ public Transition excludeTarget(Class type, boolean exclude) {
+ mTargetTypeExcludes = excludeType(mTargetTypeExcludes, type, exclude);
+ return this;
+ }
+
+ /**
+ * Whether to add the given type to the list of types whose children should
+ * be excluded from this transition. The <code>exclude</code> parameter
+ * specifies whether the target type should be added to or removed from
+ * the excluded list.
+ *
+ * <p>Excluding targets is a general mechanism for allowing transitions to run on
+ * a view hierarchy while skipping target views that should not be part of
+ * the transition. For example, you may want to avoid animating children
+ * of a specific ListView or Spinner. Views can be excluded either by their
+ * id, or by their instance reference, or by the Class of that view
+ * (eg, {@link Spinner}).</p>
+ *
+ * @see #excludeTarget(Class, boolean)
+ * @see #excludeChildren(int, boolean)
+ * @see #excludeChildren(View, boolean)
+ *
+ * @param type The type to ignore when running this transition.
+ * @param exclude Whether to add the target type to or remove it from the
+ * current list of excluded target types.
+ * @return This transition object.
+ */
+ public Transition excludeChildren(Class type, boolean exclude) {
+ mTargetTypeChildExcludes = excludeType(mTargetTypeChildExcludes, type, exclude);
+ return this;
+ }
+
+ /**
+ * Utility method to manage the boilerplate code that is the same whether we
+ * are excluding targets or their children.
+ */
+ private ArrayList<Class> excludeType(ArrayList<Class> list, Class type, boolean exclude) {
+ if (type != null) {
+ if (exclude) {
+ list = ArrayListManager.add(list, type);
+ } else {
+ list = ArrayListManager.remove(list, type);
+ }
+ }
+ return list;
+ }
+
+ /**
* Sets the target view instances that this Transition is interested in
* animating. By default, there are no targets, and a Transition will
* listen for changes on every view in the hierarchy below the sceneRoot
* the Transition to only listen for, and act on, these views.
* All other views will be ignored.
*
- * <p>The target list is like the {@link #addTargetId(int) targetId}
+ * <p>The target list is like the {@link #addTarget(int) targetId}
* list except this list specifies the actual View instances, not the ids
* of the views. This is an important distinction when scene changes involve
* view hierarchies which have been inflated separately; different views may
* share the same id but not actually be the same instance. If the transition
- * should treat those views as the same, then {@link #addTargetId(int)} should be used
+ * should treat those views as the same, then {@link #addTarget(int)} should be used
* instead of {@link #addTarget(View)}. If, on the other hand, scene changes involve
* changes all within the same view hierarchy, among views which do not
* necessarily have ids set on them, then the target list of views may be more
* convenient.</p>
*
- * @see #addTargetId(int)
+ * @see #addTarget(int)
* @param target A View on which the Transition will act, must be non-null.
* @return The Transition to which the target is added.
* Returning the same object makes it easier to chain calls during
// ignore listview children unless we can track them with stable IDs
return;
}
- long id;
+ int id = View.NO_ID;
+ long itemId = View.NO_ID;
if (!isListViewItem) {
id = view.getId();
} else {
ListView listview = (ListView) view.getParent();
int position = listview.getPositionForView(view);
- id = listview.getItemIdAtPosition(position);
+ itemId = listview.getItemIdAtPosition(position);
view.setHasTransientState(true);
}
+ if (mTargetIdExcludes != null && mTargetIdExcludes.contains(id)) {
+ return;
+ }
+ if (mTargetExcludes != null && mTargetExcludes.contains(view)) {
+ return;
+ }
+ if (mTargetTypeExcludes != null && view != null) {
+ int numTypes = mTargetTypeExcludes.size();
+ for (int i = 0; i < numTypes; ++i) {
+ if (mTargetTypeExcludes.get(i).isInstance(view)) {
+ return;
+ }
+ }
+ }
TransitionValues values = new TransitionValues();
values.view = view;
captureStartValues(values);
mStartValues.idValues.put((int) id, values);
}
} else {
- mStartValues.itemIdValues.put(id, values);
+ mStartValues.itemIdValues.put(itemId, values);
}
} else {
if (!isListViewItem) {
mEndValues.idValues.put((int) id, values);
}
} else {
- mEndValues.itemIdValues.put(id, values);
+ mEndValues.itemIdValues.put(itemId, values);
}
}
if (view instanceof ViewGroup) {
+ // Don't traverse child hierarchy if there are any child-excludes on this view
+ if (mTargetIdChildExcludes != null && mTargetIdChildExcludes.contains(id)) {
+ return;
+ }
+ if (mTargetChildExcludes != null && mTargetChildExcludes.contains(view)) {
+ return;
+ }
+ if (mTargetTypeChildExcludes != null && view != null) {
+ int numTypes = mTargetTypeChildExcludes.size();
+ for (int i = 0; i < numTypes; ++i) {
+ if (mTargetTypeChildExcludes.get(i).isInstance(view)) {
+ return;
+ }
+ }
+ }
ViewGroup parent = (ViewGroup) view;
for (int i = 0; i < parent.getChildCount(); ++i) {
captureHierarchy(parent.getChildAt(i), start);
this.values = values;
}
}
+
+ /**
+ * Utility class for managing typed ArrayLists efficiently. In particular, this
+ * can be useful for lists that we don't expect to be used often (eg, the exclude
+ * lists), so we'd like to keep them nulled out by default. This causes the code to
+ * become tedious, with constant null checks, code to allocate when necessary,
+ * and code to null out the reference when the list is empty. This class encapsulates
+ * all of that functionality into simple add()/remove() methods which perform the
+ * necessary checks, allocation/null-out as appropriate, and return the
+ * resulting list.
+ */
+ private static class ArrayListManager {
+
+ /**
+ * Add the specified item to the list, returning the resulting list.
+ * The returned list can either the be same list passed in or, if that
+ * list was null, the new list that was created.
+ *
+ * Note that the list holds unique items; if the item already exists in the
+ * list, the list is not modified.
+ */
+ static <T> ArrayList<T> add(ArrayList<T> list, T item) {
+ if (list == null) {
+ list = new ArrayList<T>();
+ }
+ if (!list.contains(item)) {
+ list.add(item);
+ }
+ return list;
+ }
+
+ /**
+ * Remove the specified item from the list, returning the resulting list.
+ * The returned list can either the be same list passed in or, if that
+ * list becomes empty as a result of the remove(), the new list was created.
+ */
+ static <T> ArrayList<T> remove(ArrayList<T> list, T item) {
+ if (list != null) {
+ list.remove(item);
+ if (list.isEmpty()) {
+ list = null;
+ }
+ }
+ return list;
+ }
+ }
+
}
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