src/com/android/launcher3/widget/WidgetsBottomSheet.java - platform/packages/apps/Launcher3 - Git at Google

 /*
  * Copyright (C) 2017 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.widget;

 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_BOTTOM_WIDGETS_TRAY;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;

 import android.animation.PropertyValuesHolder;
 import android.content.Context;
 import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.util.IntProperty;
 import android.util.Pair;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.animation.Interpolator;
 import android.widget.ScrollView;
 import android.widget.TableLayout;
 import android.widget.TableRow;
 import android.widget.TextView;

 import com.android.launcher3.R;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.widget.util.WidgetsTableUtils;

 import java.util.List;

 /**
  * Bottom sheet for the "Widgets" system shortcut in the long-press popup.
  */
 public class WidgetsBottomSheet extends BaseWidgetSheet {
     private static final String TAG = "WidgetsBottomSheet";

     private static final IntProperty<View> PADDING_BOTTOM =
             new IntProperty<View>("paddingBottom") {
                 @Override
                 public void setValue(View view, int paddingBottom) {
                     view.setPadding(view.getPaddingLeft(), view.getPaddingTop(),
                             view.getPaddingRight(), paddingBottom);
                 }

                 @Override
                 public Integer get(View view) {
                     return view.getPaddingBottom();
                 }
             };

     private static final int DEFAULT_CLOSE_DURATION = 200;
     private static final long EDUCATION_TIP_DELAY_MS = 300;

     private ItemInfo mOriginalItemInfo;
     private int mMaxHorizontalSpan = DEFAULT_MAX_HORIZONTAL_SPANS;
     private final int mWidgetCellHorizontalPadding;

     private final OnLayoutChangeListener mLayoutChangeListenerToShowTips =
             new OnLayoutChangeListener() {
                 @Override
                 public void onLayoutChange(View v, int left, int top, int right, int bottom,
                         int oldLeft, int oldTop, int oldRight, int oldBottom) {
                     if (hasSeenEducationTip()) {
                         removeOnLayoutChangeListener(this);
                         return;
                     }
                     // Widgets are loaded asynchronously, We are adding a delay because we only want
                     // to show the tip when the widget preview has finished loading and rendering in
                     // this view.
                     removeCallbacks(mShowEducationTipTask);
                     postDelayed(mShowEducationTipTask, EDUCATION_TIP_DELAY_MS);
                 }
             };

     private final Runnable mShowEducationTipTask = () -> {
         if (hasSeenEducationTip()) {
             removeOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
             return;
         }
         View viewForTip = ((ViewGroup) ((TableLayout) findViewById(R.id.widgets_table))
                                     .getChildAt(0)).getChildAt(0);
         if (showEducationTipOnViewIfPossible(viewForTip) != null) {
             removeOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
         }
     };

     public WidgetsBottomSheet(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
     }

     public WidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         setWillNotDraw(false);
         if (!hasSeenEducationTip()) {
             addOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
         }
         mWidgetCellHorizontalPadding = getResources().getDimensionPixelSize(
                 R.dimen.widget_cell_horizontal_padding);
     }

     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
         mContent = findViewById(R.id.widgets_bottom_sheet);
     }

     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         doMeasure(widthMeasureSpec, heightMeasureSpec);
         if (updateMaxSpansPerRow()) {
             doMeasure(widthMeasureSpec, heightMeasureSpec);
         }
     }

     /** Returns {@code true} if the max spans have been updated. */
     private boolean updateMaxSpansPerRow() {
         if (getMeasuredWidth() == 0) return false;

         int maxHorizontalSpan = computeMaxHorizontalSpans(mContent, mWidgetCellHorizontalPadding);
         if (mMaxHorizontalSpan != maxHorizontalSpan) {
             // Ensure the table layout is showing widgets in the right column after measure.
             mMaxHorizontalSpan = maxHorizontalSpan;
             onWidgetsBound();
             return true;
         }
         return false;
     }

     @Override
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         int width = r - l;
         int height = b - t;

         // Content is laid out as center bottom aligned.
         int contentWidth = mContent.getMeasuredWidth();
         int contentLeft = (width - contentWidth - mInsets.left - mInsets.right) / 2 + mInsets.left;
         mContent.layout(contentLeft, height - mContent.getMeasuredHeight(),
                 contentLeft + contentWidth, height);

         setTranslationShift(mTranslationShift);

         ScrollView widgetsTableScrollView = findViewById(R.id.widgets_table_scroll_view);
         TableLayout widgetsTable = findViewById(R.id.widgets_table);
         if (widgetsTable.getMeasuredHeight() > widgetsTableScrollView.getMeasuredHeight()) {
             findViewById(R.id.collapse_handle).setVisibility(VISIBLE);
         }
     }

     public void populateAndShow(ItemInfo itemInfo) {
         mOriginalItemInfo = itemInfo;
         ((TextView) findViewById(R.id.title)).setText(mOriginalItemInfo.title);

         onWidgetsBound();
         attachToContainer();
         mIsOpen = false;
         animateOpen();
     }

     @Override
     public void onWidgetsBound() {
         List<WidgetItem> widgets = mActivityContext.getPopupDataProvider().getWidgetsForPackageUser(
                 new PackageUserKey(
                         mOriginalItemInfo.getTargetComponent().getPackageName(),
                         mOriginalItemInfo.user));

         TableLayout widgetsTable = findViewById(R.id.widgets_table);
         widgetsTable.removeAllViews();

         WidgetsTableUtils.groupWidgetItemsIntoTableWithReordering(widgets, mMaxHorizontalSpan)
                 .forEach(row -> {
                     TableRow tableRow = new TableRow(getContext());
                     tableRow.setGravity(Gravity.TOP);
                     row.forEach(widgetItem -> {
                         WidgetCell widget = addItemCell(tableRow);
                         widget.applyFromCellItem(widgetItem);
                     });
                     widgetsTable.addView(tableRow);
                 });
     }

     @Override
     public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
             mNoIntercept = false;
             ScrollView scrollView = findViewById(R.id.widgets_table_scroll_view);
             if (getPopupContainer().isEventOverView(scrollView, ev)
                     && scrollView.getScrollY() > 0) {
                 mNoIntercept = true;
             }
         }
         return super.onControllerInterceptTouchEvent(ev);
     }

     protected WidgetCell addItemCell(ViewGroup parent) {
         WidgetCell widget = (WidgetCell) LayoutInflater.from(getContext())
                 .inflate(R.layout.widget_cell, parent, false);

         View previewContainer = widget.findViewById(R.id.widget_preview_container);
         previewContainer.setOnClickListener(this);
         previewContainer.setOnLongClickListener(this);
         widget.setAnimatePreview(false);
         widget.setSourceContainer(CONTAINER_BOTTOM_WIDGETS_TRAY);

         parent.addView(widget);
         return widget;
     }

     private void animateOpen() {
         if (mIsOpen || mOpenCloseAnimator.isRunning()) {
             return;
         }
         mIsOpen = true;
         setupNavBarColor();
         mOpenCloseAnimator.setValues(
                 PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
         mOpenCloseAnimator.setInterpolator(FAST_OUT_SLOW_IN);
         mOpenCloseAnimator.start();
     }

     @Override
     protected void handleClose(boolean animate) {
         handleClose(animate, DEFAULT_CLOSE_DURATION);
     }

     @Override
     protected boolean isOfType(@FloatingViewType int type) {
         return (type & TYPE_WIDGETS_BOTTOM_SHEET) != 0;
     }

     @Override
     public void setInsets(Rect insets) {
         super.setInsets(insets);
         int bottomPadding = Math.max(insets.bottom, mNavBarScrimHeight);

         mContent.setPadding(mContent.getPaddingStart(),
                 mContent.getPaddingTop(), mContent.getPaddingEnd(),
                 bottomPadding);
         if (bottomPadding > 0) {
             setupNavBarColor();
         } else {
             clearNavBarColor();
         }
     }

     @Override
     protected void onContentHorizontalMarginChanged(int contentHorizontalMarginInPx) {
         ViewGroup.MarginLayoutParams layoutParams =
                 ((ViewGroup.MarginLayoutParams) findViewById(R.id.widgets_table).getLayoutParams());
         layoutParams.setMarginStart(contentHorizontalMarginInPx);
         layoutParams.setMarginEnd(contentHorizontalMarginInPx);
     }

     @Override
     protected Pair<View, String> getAccessibilityTarget() {
         return Pair.create(findViewById(R.id.title),  getContext().getString(
                 mIsOpen ? R.string.widgets_list : R.string.widgets_list_closed));
     }

     @Override
     public void addHintCloseAnim(
             float distanceToMove, Interpolator interpolator, PendingAnimation target) {
         target.setInt(this, PADDING_BOTTOM, (int) (distanceToMove + mInsets.bottom), interpolator);
     }
 }
	/*
	* Copyright (C) 2017 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.widget;

	import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_BOTTOM_WIDGETS_TRAY;
	import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;

	import android.animation.PropertyValuesHolder;
	import android.content.Context;
	import android.graphics.Rect;
	import android.util.AttributeSet;
	import android.util.IntProperty;
	import android.util.Pair;
	import android.view.Gravity;
	import android.view.LayoutInflater;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.animation.Interpolator;
	import android.widget.ScrollView;
	import android.widget.TableLayout;
	import android.widget.TableRow;
	import android.widget.TextView;

	import com.android.launcher3.R;
	import com.android.launcher3.anim.PendingAnimation;
	import com.android.launcher3.model.WidgetItem;
	import com.android.launcher3.model.data.ItemInfo;
	import com.android.launcher3.util.PackageUserKey;
	import com.android.launcher3.widget.util.WidgetsTableUtils;

	import java.util.List;

	/**
	* Bottom sheet for the "Widgets" system shortcut in the long-press popup.
	*/
	public class WidgetsBottomSheet extends BaseWidgetSheet {
	private static final String TAG = "WidgetsBottomSheet";

	private static final IntProperty<View> PADDING_BOTTOM =
	new IntProperty<View>("paddingBottom") {
	@Override
	public void setValue(View view, int paddingBottom) {
	view.setPadding(view.getPaddingLeft(), view.getPaddingTop(),
	view.getPaddingRight(), paddingBottom);
	}

	@Override
	public Integer get(View view) {
	return view.getPaddingBottom();
	}
	};

	private static final int DEFAULT_CLOSE_DURATION = 200;
	private static final long EDUCATION_TIP_DELAY_MS = 300;

	private ItemInfo mOriginalItemInfo;
	private int mMaxHorizontalSpan = DEFAULT_MAX_HORIZONTAL_SPANS;
	private final int mWidgetCellHorizontalPadding;

	private final OnLayoutChangeListener mLayoutChangeListenerToShowTips =
	new OnLayoutChangeListener() {
	@Override
	public void onLayoutChange(View v, int left, int top, int right, int bottom,
	int oldLeft, int oldTop, int oldRight, int oldBottom) {
	if (hasSeenEducationTip()) {
	removeOnLayoutChangeListener(this);
	return;
	}
	// Widgets are loaded asynchronously, We are adding a delay because we only want
	// to show the tip when the widget preview has finished loading and rendering in
	// this view.
	removeCallbacks(mShowEducationTipTask);
	postDelayed(mShowEducationTipTask, EDUCATION_TIP_DELAY_MS);
	}
	};

	private final Runnable mShowEducationTipTask = () -> {
	if (hasSeenEducationTip()) {
	removeOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
	return;
	}
	View viewForTip = ((ViewGroup) ((TableLayout) findViewById(R.id.widgets_table))
	.getChildAt(0)).getChildAt(0);
	if (showEducationTipOnViewIfPossible(viewForTip) != null) {
	removeOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
	}
	};

	public WidgetsBottomSheet(Context context, AttributeSet attrs) {
	this(context, attrs, 0);
	}

	public WidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
	super(context, attrs, defStyleAttr);
	setWillNotDraw(false);
	if (!hasSeenEducationTip()) {
	addOnLayoutChangeListener(mLayoutChangeListenerToShowTips);
	}
	mWidgetCellHorizontalPadding = getResources().getDimensionPixelSize(
	R.dimen.widget_cell_horizontal_padding);
	}

	@Override
	protected void onFinishInflate() {
	super.onFinishInflate();
	mContent = findViewById(R.id.widgets_bottom_sheet);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
	doMeasure(widthMeasureSpec, heightMeasureSpec);
	if (updateMaxSpansPerRow()) {
	doMeasure(widthMeasureSpec, heightMeasureSpec);
	}
	}

	/** Returns {@code true} if the max spans have been updated. */
	private boolean updateMaxSpansPerRow() {
	if (getMeasuredWidth() == 0) return false;

	int maxHorizontalSpan = computeMaxHorizontalSpans(mContent, mWidgetCellHorizontalPadding);
	if (mMaxHorizontalSpan != maxHorizontalSpan) {
	// Ensure the table layout is showing widgets in the right column after measure.
	mMaxHorizontalSpan = maxHorizontalSpan;
	onWidgetsBound();
	return true;
	}
	return false;
	}

	@Override
	protected void onLayout(boolean changed, int l, int t, int r, int b) {
	int width = r - l;
	int height = b - t;

	// Content is laid out as center bottom aligned.
	int contentWidth = mContent.getMeasuredWidth();
	int contentLeft = (width - contentWidth - mInsets.left - mInsets.right) / 2 + mInsets.left;
	mContent.layout(contentLeft, height - mContent.getMeasuredHeight(),
	contentLeft + contentWidth, height);

	setTranslationShift(mTranslationShift);

	ScrollView widgetsTableScrollView = findViewById(R.id.widgets_table_scroll_view);
	TableLayout widgetsTable = findViewById(R.id.widgets_table);
	if (widgetsTable.getMeasuredHeight() > widgetsTableScrollView.getMeasuredHeight()) {
	findViewById(R.id.collapse_handle).setVisibility(VISIBLE);
	}
	}

	public void populateAndShow(ItemInfo itemInfo) {
	mOriginalItemInfo = itemInfo;
	((TextView) findViewById(R.id.title)).setText(mOriginalItemInfo.title);

	onWidgetsBound();
	attachToContainer();
	mIsOpen = false;
	animateOpen();
	}

	@Override
	public void onWidgetsBound() {
	List<WidgetItem> widgets = mActivityContext.getPopupDataProvider().getWidgetsForPackageUser(
	new PackageUserKey(
	mOriginalItemInfo.getTargetComponent().getPackageName(),
	mOriginalItemInfo.user));

	TableLayout widgetsTable = findViewById(R.id.widgets_table);
	widgetsTable.removeAllViews();

	WidgetsTableUtils.groupWidgetItemsIntoTableWithReordering(widgets, mMaxHorizontalSpan)
	.forEach(row -> {
	TableRow tableRow = new TableRow(getContext());
	tableRow.setGravity(Gravity.TOP);
	row.forEach(widgetItem -> {
	WidgetCell widget = addItemCell(tableRow);
	widget.applyFromCellItem(widgetItem);
	});
	widgetsTable.addView(tableRow);
	});
	}

	@Override
	public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
	if (ev.getAction() == MotionEvent.ACTION_DOWN) {
	mNoIntercept = false;
	ScrollView scrollView = findViewById(R.id.widgets_table_scroll_view);
	if (getPopupContainer().isEventOverView(scrollView, ev)
	&& scrollView.getScrollY() > 0) {
	mNoIntercept = true;
	}
	}
	return super.onControllerInterceptTouchEvent(ev);
	}

	protected WidgetCell addItemCell(ViewGroup parent) {
	WidgetCell widget = (WidgetCell) LayoutInflater.from(getContext())
	.inflate(R.layout.widget_cell, parent, false);

	View previewContainer = widget.findViewById(R.id.widget_preview_container);
	previewContainer.setOnClickListener(this);
	previewContainer.setOnLongClickListener(this);
	widget.setAnimatePreview(false);
	widget.setSourceContainer(CONTAINER_BOTTOM_WIDGETS_TRAY);

	parent.addView(widget);
	return widget;
	}

	private void animateOpen() {
	if (mIsOpen \|\| mOpenCloseAnimator.isRunning()) {
	return;
	}
	mIsOpen = true;
	setupNavBarColor();
	mOpenCloseAnimator.setValues(
	PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
	mOpenCloseAnimator.setInterpolator(FAST_OUT_SLOW_IN);
	mOpenCloseAnimator.start();
	}

	@Override
	protected void handleClose(boolean animate) {
	handleClose(animate, DEFAULT_CLOSE_DURATION);
	}

	@Override
	protected boolean isOfType(@FloatingViewType int type) {
	return (type & TYPE_WIDGETS_BOTTOM_SHEET) != 0;
	}

	@Override
	public void setInsets(Rect insets) {
	super.setInsets(insets);
	int bottomPadding = Math.max(insets.bottom, mNavBarScrimHeight);

	mContent.setPadding(mContent.getPaddingStart(),
	mContent.getPaddingTop(), mContent.getPaddingEnd(),
	bottomPadding);
	if (bottomPadding > 0) {
	setupNavBarColor();
	} else {
	clearNavBarColor();
	}
	}

	@Override
	protected void onContentHorizontalMarginChanged(int contentHorizontalMarginInPx) {
	ViewGroup.MarginLayoutParams layoutParams =
	((ViewGroup.MarginLayoutParams) findViewById(R.id.widgets_table).getLayoutParams());
	layoutParams.setMarginStart(contentHorizontalMarginInPx);
	layoutParams.setMarginEnd(contentHorizontalMarginInPx);
	}

	@Override
	protected Pair<View, String> getAccessibilityTarget() {
	return Pair.create(findViewById(R.id.title), getContext().getString(
	mIsOpen ? R.string.widgets_list : R.string.widgets_list_closed));
	}

	@Override
	public void addHintCloseAnim(
	float distanceToMove, Interpolator interpolator, PendingAnimation target) {
	target.setInt(this, PADDING_BOTTOM, (int) (distanceToMove + mInsets.bottom), interpolator);
	}
	}