content: /*
   * Copyright (C) 2016 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 com.android.launcher3.shortcuts;
  
  import android.content.Context;
  import android.content.res.Resources;
  import android.graphics.Canvas;
  import android.graphics.Rect;
  import android.graphics.drawable.Drawable;
  import android.text.TextUtils;
  import android.util.AttributeSet;
  import android.view.MotionEvent;
  import android.widget.Toast;
  
  import com.android.launcher3.BubbleTextView;
  import com.android.launcher3.R;
  import com.android.launcher3.Utilities;
  
  /**
   * A {@link BubbleTextView} that has the shortcut icon on the left and drag handle on the right.
   */
  public class DeepShortcutTextView extends BubbleTextView {
      private final Rect mDragHandleBounds = new Rect();
      private final int mDragHandleWidth;
      private boolean mShowInstructionToast = false;
  
      private Toast mInstructionToast;
  
      private boolean mShowLoadingState;
      private Drawable mLoadingStatePlaceholder;
      private final Rect mLoadingStateBounds = new Rect();
  
      public DeepShortcutTextView(Context context) {
          this(context, null, 0);
      }
  
      public DeepShortcutTextView(Context context, AttributeSet attrs) {
          this(context, attrs, 0);
      }
  
      public DeepShortcutTextView(Context context, AttributeSet attrs, int defStyle) {
          super(context, attrs, defStyle);
  
          Resources resources = getResources();
          mDragHandleWidth = resources.getDimensionPixelSize(R.dimen.popup_padding_end)
                  + resources.getDimensionPixelSize(R.dimen.deep_shortcut_drag_handle_size)
                  + resources.getDimensionPixelSize(R.dimen.deep_shortcut_drawable_padding) / 2;
          showLoadingState(true);
      }
  
      @Override
      protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
          super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  
          mDragHandleBounds.set(0, 0, mDragHandleWidth, getMeasuredHeight());
          if (!Utilities.isRtl(getResources())) {
              mDragHandleBounds.offset(getMeasuredWidth() - mDragHandleBounds.width(), 0);
          }
  
          setLoadingBounds();
      }
  
      private void setLoadingBounds() {
          if (mLoadingStatePlaceholder == null) {
              return;
          }
          mLoadingStateBounds.set(
                  0,
                  0,
                  getMeasuredWidth() - mDragHandleWidth - getPaddingStart(),
                  mLoadingStatePlaceholder.getIntrinsicHeight());
          mLoadingStateBounds.offset(
                  Utilities.isRtl(getResources()) ? mDragHandleWidth : getPaddingStart(),
                  (int) ((getMeasuredHeight() - mLoadingStatePlaceholder.getIntrinsicHeight())
                          / 2.0f)
          );
          mLoadingStatePlaceholder.setBounds(mLoadingStateBounds);
      }
  
      @Override
      protected void applyCompoundDrawables(Drawable icon) {
          // The icon is drawn in a separate view.
      }
  
      @Override
      public void setText(CharSequence text, BufferType type) {
          super.setText(text, type);
  
          if (!TextUtils.isEmpty(text)) {
              showLoadingState(false);
          }
      }
  
      @Override
      public boolean onTouchEvent(MotionEvent ev) {
          if (ev.getAction() == MotionEvent.ACTION_DOWN) {
              // Show toast if user touches the drag handle (long clicks still start the drag).
              mShowInstructionToast = mDragHandleBounds.contains((int) ev.getX(), (int) ev.getY());
          }
          return super.onTouchEvent(ev);
      }
  
      @Override
      public boolean performClick() {
          if (mShowInstructionToast) {
              showToast();
              return true;
          }
          return super.performClick();
      }
  
      @Override
      public void onDraw(Canvas canvas) {
          if (!mShowLoadingState) {
              super.onDraw(canvas);
              return;
          }
  
          mLoadingStatePlaceholder.draw(canvas);
      }
  
      private void showLoadingState(boolean loading) {
          if (loading == mShowLoadingState) {
              return;
          }
  
          mShowLoadingState = loading;
  
          if (loading) {
              mLoadingStatePlaceholder = getContext().getDrawable(
                      R.drawable.deep_shortcuts_text_placeholder);
              setLoadingBounds();
          } else {
              mLoadingStatePlaceholder = null;
          }
  
          invalidate();
      }
  
      private void showToast() {
          if (mInstructionToast != null) {
              mInstructionToast.cancel();
          }
          CharSequence msg = Utilities.wrapForTts(
                  getContext().getText(R.string.long_press_shortcut_to_add),
                  getContext().getString(R.string.long_accessible_way_to_add_shortcut));
          mInstructionToast = Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT);
          mInstructionToast.show();
      }
  }
  