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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
commit | d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /core/java/android/widget/AbsSpinner.java | |
parent | 076357b8567458d4b6dfdcf839ef751634cd2bfb (diff) | |
download | frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.zip frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.gz frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'core/java/android/widget/AbsSpinner.java')
-rw-r--r-- | core/java/android/widget/AbsSpinner.java | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/core/java/android/widget/AbsSpinner.java b/core/java/android/widget/AbsSpinner.java deleted file mode 100644 index 424a936..0000000 --- a/core/java/android/widget/AbsSpinner.java +++ /dev/null @@ -1,490 +0,0 @@ -/* - * Copyright (C) 2006 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package android.widget; - -import com.android.internal.R; - -import android.content.Context; -import android.content.res.TypedArray; -import android.database.DataSetObserver; -import android.graphics.Rect; -import android.os.Parcel; -import android.os.Parcelable; -import android.util.AttributeSet; -import android.util.SparseArray; -import android.view.View; -import android.view.ViewGroup; -import android.view.animation.Interpolator; - - -/** - * An abstract base class for spinner widgets. SDK users will probably not - * need to use this class. - * - * @attr ref android.R.styleable#AbsSpinner_entries - */ -public abstract class AbsSpinner extends AdapterView<SpinnerAdapter> { - - SpinnerAdapter mAdapter; - - int mHeightMeasureSpec; - int mWidthMeasureSpec; - boolean mBlockLayoutRequests; - int mSelectionLeftPadding = 0; - int mSelectionTopPadding = 0; - int mSelectionRightPadding = 0; - int mSelectionBottomPadding = 0; - Rect mSpinnerPadding = new Rect(); - View mSelectedView = null; - Interpolator mInterpolator; - - RecycleBin mRecycler = new RecycleBin(); - private DataSetObserver mDataSetObserver; - - - /** Temporary frame to hold a child View's frame rectangle */ - private Rect mTouchFrame; - - public AbsSpinner(Context context) { - super(context); - initAbsSpinner(); - } - - public AbsSpinner(Context context, AttributeSet attrs) { - this(context, attrs, 0); - } - - public AbsSpinner(Context context, AttributeSet attrs, int defStyle) { - super(context, attrs, defStyle); - initAbsSpinner(); - - TypedArray a = context.obtainStyledAttributes(attrs, - com.android.internal.R.styleable.AbsSpinner, defStyle, 0); - - CharSequence[] entries = a.getTextArray(R.styleable.AbsSpinner_entries); - if (entries != null) { - ArrayAdapter<CharSequence> adapter = - new ArrayAdapter<CharSequence>(context, - R.layout.simple_spinner_item, entries); - adapter.setDropDownViewResource(R.layout.simple_spinner_dropdown_item); - setAdapter(adapter); - } - - a.recycle(); - } - - /** - * Common code for different constructor flavors - */ - private void initAbsSpinner() { - setFocusable(true); - setWillNotDraw(false); - } - - - /** - * The Adapter is used to provide the data which backs this Spinner. - * It also provides methods to transform spinner items based on their position - * relative to the selected item. - * @param adapter The SpinnerAdapter to use for this Spinner - */ - @Override - public void setAdapter(SpinnerAdapter adapter) { - if (null != mAdapter) { - mAdapter.unregisterDataSetObserver(mDataSetObserver); - resetList(); - } - - mAdapter = adapter; - - mOldSelectedPosition = INVALID_POSITION; - mOldSelectedRowId = INVALID_ROW_ID; - - if (mAdapter != null) { - mOldItemCount = mItemCount; - mItemCount = mAdapter.getCount(); - checkFocus(); - - mDataSetObserver = new AdapterDataSetObserver(); - mAdapter.registerDataSetObserver(mDataSetObserver); - - int position = mItemCount > 0 ? 0 : INVALID_POSITION; - - setSelectedPositionInt(position); - setNextSelectedPositionInt(position); - - if (mItemCount == 0) { - // Nothing selected - checkSelectionChanged(); - } - - } else { - checkFocus(); - resetList(); - // Nothing selected - checkSelectionChanged(); - } - - requestLayout(); - } - - /** - * Clear out all children from the list - */ - void resetList() { - mDataChanged = false; - mNeedSync = false; - - removeAllViewsInLayout(); - mOldSelectedPosition = INVALID_POSITION; - mOldSelectedRowId = INVALID_ROW_ID; - - setSelectedPositionInt(INVALID_POSITION); - setNextSelectedPositionInt(INVALID_POSITION); - invalidate(); - } - - /** - * @see android.view.View#measure(int, int) - * - * Figure out the dimensions of this Spinner. The width comes from - * the widthMeasureSpec as Spinnners can't have their width set to - * UNSPECIFIED. The height is based on the height of the selected item - * plus padding. - */ - @Override - protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { - int widthMode = MeasureSpec.getMode(widthMeasureSpec); - int widthSize; - int heightSize; - - mSpinnerPadding.left = mPaddingLeft > mSelectionLeftPadding ? mPaddingLeft - : mSelectionLeftPadding; - mSpinnerPadding.top = mPaddingTop > mSelectionTopPadding ? mPaddingTop - : mSelectionTopPadding; - mSpinnerPadding.right = mPaddingRight > mSelectionRightPadding ? mPaddingRight - : mSelectionRightPadding; - mSpinnerPadding.bottom = mPaddingBottom > mSelectionBottomPadding ? mPaddingBottom - : mSelectionBottomPadding; - - if (mDataChanged) { - handleDataChanged(); - } - - int preferredHeight = 0; - int preferredWidth = 0; - boolean needsMeasuring = true; - - int selectedPosition = getSelectedItemPosition(); - if (selectedPosition >= 0 && mAdapter != null) { - // Try looking in the recycler. (Maybe we were measured once already) - View view = mRecycler.get(selectedPosition); - if (view == null) { - // Make a new one - view = mAdapter.getView(selectedPosition, null, this); - } - - if (view != null) { - // Put in recycler for re-measuring and/or layout - mRecycler.put(selectedPosition, view); - } - - if (view != null) { - if (view.getLayoutParams() == null) { - mBlockLayoutRequests = true; - view.setLayoutParams(generateDefaultLayoutParams()); - mBlockLayoutRequests = false; - } - measureChild(view, widthMeasureSpec, heightMeasureSpec); - - preferredHeight = getChildHeight(view) + mSpinnerPadding.top + mSpinnerPadding.bottom; - preferredWidth = getChildWidth(view) + mSpinnerPadding.left + mSpinnerPadding.right; - - needsMeasuring = false; - } - } - - if (needsMeasuring) { - // No views -- just use padding - preferredHeight = mSpinnerPadding.top + mSpinnerPadding.bottom; - if (widthMode == MeasureSpec.UNSPECIFIED) { - preferredWidth = mSpinnerPadding.left + mSpinnerPadding.right; - } - } - - preferredHeight = Math.max(preferredHeight, getSuggestedMinimumHeight()); - preferredWidth = Math.max(preferredWidth, getSuggestedMinimumWidth()); - - heightSize = resolveSize(preferredHeight, heightMeasureSpec); - widthSize = resolveSize(preferredWidth, widthMeasureSpec); - - setMeasuredDimension(widthSize, heightSize); - mHeightMeasureSpec = heightMeasureSpec; - mWidthMeasureSpec = widthMeasureSpec; - } - - - int getChildHeight(View child) { - return child.getMeasuredHeight(); - } - - int getChildWidth(View child) { - return child.getMeasuredWidth(); - } - - @Override - protected ViewGroup.LayoutParams generateDefaultLayoutParams() { - return new ViewGroup.LayoutParams( - ViewGroup.LayoutParams.FILL_PARENT, - ViewGroup.LayoutParams.WRAP_CONTENT); - } - - void recycleAllViews() { - int childCount = getChildCount(); - final AbsSpinner.RecycleBin recycleBin = mRecycler; - - // All views go in recycler - for (int i=0; i<childCount; i++) { - View v = getChildAt(i); - int index = mFirstPosition + i; - recycleBin.put(index, v); - } - } - - @Override - void handleDataChanged() { - // FIXME -- this is called from both measure and layout. - // This is harmless right now, but we don't want to do redundant work if - // this gets more complicated - super.handleDataChanged(); - } - - - - /** - * Jump directly to a specific item in the adapter data. - */ - public void setSelection(int position, boolean animate) { - // Animate only if requested position is already on screen somewhere - boolean shouldAnimate = animate && mFirstPosition <= position && - position <= mFirstPosition + getChildCount() - 1; - setSelectionInt(position, shouldAnimate); - } - - - @Override - public void setSelection(int position) { - setNextSelectedPositionInt(position); - requestLayout(); - invalidate(); - } - - - /** - * Makes the item at the supplied position selected. - * - * @param position Position to select - * @param animate Should the transition be animated - * - */ - void setSelectionInt(int position, boolean animate) { - if (position != mOldSelectedPosition) { - mBlockLayoutRequests = true; - int delta = position - mSelectedPosition; - setNextSelectedPositionInt(position); - layout(delta, animate); - mBlockLayoutRequests = false; - } - } - - abstract void layout(int delta, boolean animate); - - @Override - public View getSelectedView() { - if (mItemCount > 0 && mSelectedPosition >= 0) { - return getChildAt(mSelectedPosition - mFirstPosition); - } else { - return null; - } - } - - /** - * Override to prevent spamming ourselves with layout requests - * as we place views - * - * @see android.view.View#requestLayout() - */ - @Override - public void requestLayout() { - if (!mBlockLayoutRequests) { - super.requestLayout(); - } - } - - - - @Override - public SpinnerAdapter getAdapter() { - return mAdapter; - } - - @Override - public int getCount() { - return mItemCount; - } - - /** - * Maps a point to a position in the list. - * - * @param x X in local coordinate - * @param y Y in local coordinate - * @return The position of the item which contains the specified point, or - * {@link #INVALID_POSITION} if the point does not intersect an item. - */ - public int pointToPosition(int x, int y) { - Rect frame = mTouchFrame; - if (frame == null) { - mTouchFrame = new Rect(); - frame = mTouchFrame; - } - - final int count = getChildCount(); - for (int i = count - 1; i >= 0; i--) { - View child = getChildAt(i); - if (child.getVisibility() == View.VISIBLE) { - child.getHitRect(frame); - if (frame.contains(x, y)) { - return mFirstPosition + i; - } - } - } - return INVALID_POSITION; - } - - static class SavedState extends BaseSavedState { - long selectedId; - int position; - - /** - * Constructor called from {@link AbsSpinner#onSaveInstanceState()} - */ - SavedState(Parcelable superState) { - super(superState); - } - - /** - * Constructor called from {@link #CREATOR} - */ - private SavedState(Parcel in) { - super(in); - selectedId = in.readLong(); - position = in.readInt(); - } - - @Override - public void writeToParcel(Parcel out, int flags) { - super.writeToParcel(out, flags); - out.writeLong(selectedId); - out.writeInt(position); - } - - @Override - public String toString() { - return "AbsSpinner.SavedState{" - + Integer.toHexString(System.identityHashCode(this)) - + " selectedId=" + selectedId - + " position=" + position + "}"; - } - - public static final Parcelable.Creator<SavedState> CREATOR - = new Parcelable.Creator<SavedState>() { - public SavedState createFromParcel(Parcel in) { - return new SavedState(in); - } - - public SavedState[] newArray(int size) { - return new SavedState[size]; - } - }; - } - - @Override - public Parcelable onSaveInstanceState() { - Parcelable superState = super.onSaveInstanceState(); - SavedState ss = new SavedState(superState); - ss.selectedId = getSelectedItemId(); - if (ss.selectedId >= 0) { - ss.position = getSelectedItemPosition(); - } else { - ss.position = INVALID_POSITION; - } - return ss; - } - - @Override - public void onRestoreInstanceState(Parcelable state) { - SavedState ss = (SavedState) state; - - super.onRestoreInstanceState(ss.getSuperState()); - - if (ss.selectedId >= 0) { - mDataChanged = true; - mNeedSync = true; - mSyncRowId = ss.selectedId; - mSyncPosition = ss.position; - mSyncMode = SYNC_SELECTED_POSITION; - requestLayout(); - } - } - - class RecycleBin { - private SparseArray<View> mScrapHeap = new SparseArray<View>(); - - public void put(int position, View v) { - mScrapHeap.put(position, v); - } - - View get(int position) { - // System.out.print("Looking for " + position); - View result = mScrapHeap.get(position); - if (result != null) { - // System.out.println(" HIT"); - mScrapHeap.delete(position); - } else { - // System.out.println(" MISS"); - } - return result; - } - - View peek(int position) { - // System.out.print("Looking for " + position); - return mScrapHeap.get(position); - } - - void clear() { - final SparseArray<View> scrapHeap = mScrapHeap; - final int count = scrapHeap.size(); - for (int i = 0; i < count; i++) { - final View view = scrapHeap.valueAt(i); - if (view != null) { - removeDetachedView(view, true); - } - } - scrapHeap.clear(); - } - } -} |