Resize AutoCompleteTextView's dropdown when the list content changes. (6a678102) · Commits · e / os / android_frameworks_base

core/java/android/widget/AutoCompleteTextView.java

+31 −59

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package android.widget;

		import android.content.Context;
		import android.content.res.TypedArray;
		import android.database.DataSetObserver;
		import android.graphics.Rect;
		import android.graphics.drawable.Drawable;
		import android.text.Editable;
		@@ -129,10 +130,11 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe

		private boolean mBlockCompletion;

		private AutoCompleteTextView.ListSelectorHider mHideSelector;
		private ListSelectorHider mHideSelector;
		private Runnable mShowDropDownRunnable;

		private AutoCompleteTextView.PassThroughClickListener mPassThroughClickListener;
		private PassThroughClickListener mPassThroughClickListener;
		private PopupDataSetObserver mObserver;

		public AutoCompleteTextView(Context context) {
		this(context, null);
		@@ -217,14 +219,6 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		}
		}

		/**
		* Sets this to be single line; a separate method so
		* MultiAutoCompleteTextView can skip this.
		*/
		/* package */ void finishInit() {
		setSingleLine();
		}

		/**
		* <p>Sets the optional hint text that is displayed at the bottom of the
		* the matching list. This can be used as a cue to the user on how to
		@@ -590,10 +584,16 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		* @see android.widget.ListAdapter
		*/
		public <T extends ListAdapter & Filterable> void setAdapter(T adapter) {
		if (mObserver == null) {
		mObserver = new PopupDataSetObserver();
		} else if (mAdapter != null) {
		mAdapter.unregisterDataSetObserver(mObserver);
		}
		mAdapter = adapter;
		if (mAdapter != null) {
		//noinspection unchecked
		mFilter = ((Filterable) mAdapter).getFilter();
		adapter.registerDataSetObserver(mObserver);
		} else {
		mFilter = null;
		}
		@@ -866,16 +866,6 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		return ListView.INVALID_POSITION;
		}


		/**
		* @hide
		* @return {@link android.widget.ListView#getChildCount()} of the drop down if it is showing,
		* otherwise 0.
		*/
		protected int getDropDownChildCount() {
		return mDropDownList == null ? 0 : mDropDownList.getChildCount();
		}

		/**
		* <p>Starts filtering the content of the drop down list. The filtering
		* pattern is the content of the edit box. Subclasses should override this
		@@ -977,24 +967,6 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		}
		}

		/**
		* Like {@link #setTextKeepState(CharSequence)}, except that it can disable filtering.
		*
		* @param filter If <code>false</code>, no filtering will be performed
		* as a result of this call.
		*
		* @hide Pending API council approval.
		*/
		public void setTextKeepState(CharSequence text, boolean filter) {
		if (filter) {
		setTextKeepState(text);
		} else {
		mBlockCompletion = true;
		setTextKeepState(text);
		mBlockCompletion = false;
		}
		}

		/**
		* <p>Performs the text completion by replacing the current text by the
		* selected item. Subclasses should override this method to avoid replacing
		@@ -1523,24 +1495,6 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		return view;
		}

		/**
		* <p>Returns the top padding of the currently selected view.</p>
		*
		* @return the height of the top padding for the selection
		*/
		public int getSelectionPaddingTop() {
		return mSelectionTopPadding;
		}

		/**
		* <p>Returns the bottom padding of the currently selected view.</p>
		*
		* @return the height of the bottom padding for the selection
		*/
		public int getSelectionPaddingBottom() {
		return mSelectionBottomPadding;
		}

		@Override
		public boolean isInTouchMode() {
		// WARNING: Please read the comment where mListSelectionHidden is declared
		@@ -1639,4 +1593,22 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
		}
		}

		private class PopupDataSetObserver extends DataSetObserver {
		@Override
		public void onChanged() {
		if (isPopupShowing()) {
		// This will resize the popup to fit the new adapter's content
		showDropDown();
		}
		}

		@Override
		public void onInvalidated() {
		if (!mDropDownAlwaysVisible) {
		// There's no data to display so make sure we're not showing
		// the drop down and its list
		dismissDropDown();
		}
		}
		}
		}