src/com/android/launcher3/views/Snackbar.java - LeafOS-Project/android_packages_apps_Launcher3 - Gitiles

 /*
  * Copyright (C) 2018 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.views;

 import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_CONTROLS;
 import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_TEXT;

 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.util.TypedValue;
 import android.view.Gravity;
 import android.view.MotionEvent;
 import android.widget.TextView;

 import androidx.annotation.Nullable;

 import com.android.app.animation.Interpolators;
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
 import com.android.launcher3.dragndrop.DragLayer;

 /**
  * A toast-like UI at the bottom of the screen with a label, button action, and dismiss action.
  */
 public class Snackbar extends AbstractFloatingView {

     private static final long SHOW_DURATION_MS = 180;
     private static final long HIDE_DURATION_MS = 180;
     private static final int TIMEOUT_DURATION_MS = 4000;

     private final ActivityContext mActivity;
     private Runnable mOnDismissed;

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

     public Snackbar(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         mActivity = ActivityContext.lookupContext(context);
         inflate(context, R.layout.snackbar, this);
     }

     /** Show a snackbar with just a label. */
     public static <T extends Context & ActivityContext> void show(T activity, int labelStringRedId,
             Runnable onDismissed) {
         show(activity, labelStringRedId, NO_ID, onDismissed, null);
     }

     /** Show a snackbar with just a label. */
     public static void show(
             ActivityContext activity, CharSequence labelString, Runnable onDismissed) {
         show(activity, labelString, NO_ID, onDismissed, null);
     }

     /** Show a snackbar with a label and action. */
     public static <T extends Context & ActivityContext> void show(T activity, int labelStringResId,
             int actionStringResId, Runnable onDismissed, @Nullable Runnable onActionClicked) {
         show(
                 activity,
                 activity.getResources().getText(labelStringResId),
                 actionStringResId,
                 onDismissed,
                 onActionClicked);
     }

     /** Show a snackbar with a label and action. */
     public static void show(ActivityContext activity, CharSequence labelString,
             int actionStringResId, Runnable onDismissed, @Nullable Runnable onActionClicked) {
         closeOpenViews(activity, true, TYPE_SNACKBAR);
         Snackbar snackbar = new Snackbar((Context) activity, null);
         // Set some properties here since inflated xml only contains the children.
         snackbar.setOrientation(HORIZONTAL);
         snackbar.setGravity(Gravity.CENTER_VERTICAL);
         Resources res = snackbar.getResources();
         snackbar.setElevation(res.getDimension(R.dimen.snackbar_elevation));
         int padding = res.getDimensionPixelSize(R.dimen.snackbar_padding);
         snackbar.setPadding(padding, padding, padding, padding);
         snackbar.setBackgroundResource(R.drawable.round_rect_primary);

         snackbar.mIsOpen = true;
         BaseDragLayer dragLayer = activity.getDragLayer();
         dragLayer.addView(snackbar);

         DragLayer.LayoutParams params = (DragLayer.LayoutParams) snackbar.getLayoutParams();
         params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
         params.height = res.getDimensionPixelSize(R.dimen.snackbar_height);
         int maxMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_max_margin_left_right);
         int minMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_min_margin_left_right);
         int marginBottom = res.getDimensionPixelSize(R.dimen.snackbar_margin_bottom);
         int absoluteMaxWidth = res.getDimensionPixelSize(R.dimen.snackbar_max_width);
         Rect insets = activity.getDeviceProfile().getInsets();
         int maxWidth = Math.min(
                 dragLayer.getWidth() - minMarginLeftRight * 2 - insets.left - insets.right,
                 absoluteMaxWidth);
         int minWidth = Math.min(
                 dragLayer.getWidth() - maxMarginLeftRight * 2 - insets.left - insets.right,
                 absoluteMaxWidth);
         params.width = minWidth;
         DeviceProfile deviceProfile = activity.getDeviceProfile();
         params.setMargins(0, 0, 0, marginBottom
                 + (deviceProfile.isTaskbarPresent
                 ? deviceProfile.taskbarHeight + deviceProfile.getTaskbarOffsetY()
                 : insets.bottom));

         TextView labelView = snackbar.findViewById(R.id.label);
         labelView.setText(labelString);

         TextView actionView = snackbar.findViewById(R.id.action);
         float actionWidth;
         if (actionStringResId != NO_ID) {
             String actionText = res.getString(actionStringResId);
             actionWidth = actionView.getPaint().measureText(actionText)
                     + actionView.getPaddingRight() + actionView.getPaddingLeft();
             actionView.setText(actionText);
             actionView.setOnClickListener(v -> {
                 if (onActionClicked != null) {
                     onActionClicked.run();
                 }
                 snackbar.mOnDismissed = null;
                 snackbar.close(true);
             });
         } else {
             actionWidth = 0;
             actionView.setVisibility(GONE);
         }

         int totalContentWidth = (int) (labelView.getPaint().measureText(labelString.toString())
                     + actionWidth)
                 + labelView.getPaddingRight() + labelView.getPaddingLeft()
                 + padding * 2;
         if (totalContentWidth > params.width) {
             // The text doesn't fit in our standard width so update width to accommodate.
             if (totalContentWidth <= maxWidth) {
                 params.width = totalContentWidth;
             } else {
                 // One line will be cut off, fallback to 2 lines and smaller font. (This should only
                 // happen in some languages if system display and font size are set to largest.)
                 int textHeight = res.getDimensionPixelSize(R.dimen.snackbar_content_height);
                 float textSizePx = res.getDimension(R.dimen.snackbar_min_text_size);
                 labelView.setLines(2);
                 labelView.getLayoutParams().height = textHeight * 2;
                 actionView.getLayoutParams().height = textHeight * 2;
                 labelView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
                 actionView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
                 params.height += textHeight;
                 params.width = maxWidth;
             }
         }

         snackbar.mOnDismissed = onDismissed;
         snackbar.setAlpha(0);
         snackbar.setScaleX(0.8f);
         snackbar.setScaleY(0.8f);
         snackbar.animate()
                 .alpha(1f)
                 .withLayer()
                 .scaleX(1)
                 .scaleY(1)
                 .setDuration(SHOW_DURATION_MS)
                 .setInterpolator(Interpolators.ACCELERATE_DECELERATE)
                 .start();
         int timeout = AccessibilityManagerCompat.getRecommendedTimeoutMillis(snackbar.getContext(),
                 TIMEOUT_DURATION_MS, FLAG_CONTENT_TEXT | FLAG_CONTENT_CONTROLS);
         snackbar.postDelayed(() -> snackbar.close(true), timeout);
     }

     @Override
     protected void handleClose(boolean animate) {
         if (mIsOpen) {
             if (animate) {
                 animate().alpha(0f)
                         .withLayer()
                         .setStartDelay(0)
                         .setDuration(HIDE_DURATION_MS)
                         .setInterpolator(Interpolators.ACCELERATE)
                         .withEndAction(this::onClosed)
                         .start();
             } else {
                 animate().cancel();
                 onClosed();
             }
             mIsOpen = false;
         }
     }

     private void onClosed() {
         mActivity.getDragLayer().removeView(this);
         if (mOnDismissed != null) {
             mOnDismissed.run();
         }
     }

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

     @Override
     public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
             BaseDragLayer dl = mActivity.getDragLayer();
             if (!dl.isEventOverView(this, ev)) {
                 close(true);
             }
         }
         return false;
     }
 }
	/*
	* Copyright (C) 2018 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.views;

	import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_CONTROLS;
	import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_TEXT;

	import android.content.Context;
	import android.content.res.Resources;
	import android.graphics.Rect;
	import android.util.AttributeSet;
	import android.util.TypedValue;
	import android.view.Gravity;
	import android.view.MotionEvent;
	import android.widget.TextView;

	import androidx.annotation.Nullable;

	import com.android.app.animation.Interpolators;
	import com.android.launcher3.AbstractFloatingView;
	import com.android.launcher3.DeviceProfile;
	import com.android.launcher3.R;
	import com.android.launcher3.compat.AccessibilityManagerCompat;
	import com.android.launcher3.dragndrop.DragLayer;

	/**
	* A toast-like UI at the bottom of the screen with a label, button action, and dismiss action.
	*/
	public class Snackbar extends AbstractFloatingView {

	private static final long SHOW_DURATION_MS = 180;
	private static final long HIDE_DURATION_MS = 180;
	private static final int TIMEOUT_DURATION_MS = 4000;

	private final ActivityContext mActivity;
	private Runnable mOnDismissed;

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

	public Snackbar(Context context, AttributeSet attrs, int defStyleAttr) {
	super(context, attrs, defStyleAttr);
	mActivity = ActivityContext.lookupContext(context);
	inflate(context, R.layout.snackbar, this);
	}

	/** Show a snackbar with just a label. */
	public static <T extends Context & ActivityContext> void show(T activity, int labelStringRedId,
	Runnable onDismissed) {
	show(activity, labelStringRedId, NO_ID, onDismissed, null);
	}

	/** Show a snackbar with just a label. */
	public static void show(
	ActivityContext activity, CharSequence labelString, Runnable onDismissed) {
	show(activity, labelString, NO_ID, onDismissed, null);
	}

	/** Show a snackbar with a label and action. */
	public static <T extends Context & ActivityContext> void show(T activity, int labelStringResId,
	int actionStringResId, Runnable onDismissed, @Nullable Runnable onActionClicked) {
	show(
	activity,
	activity.getResources().getText(labelStringResId),
	actionStringResId,
	onDismissed,
	onActionClicked);
	}

	/** Show a snackbar with a label and action. */
	public static void show(ActivityContext activity, CharSequence labelString,
	int actionStringResId, Runnable onDismissed, @Nullable Runnable onActionClicked) {
	closeOpenViews(activity, true, TYPE_SNACKBAR);
	Snackbar snackbar = new Snackbar((Context) activity, null);
	// Set some properties here since inflated xml only contains the children.
	snackbar.setOrientation(HORIZONTAL);
	snackbar.setGravity(Gravity.CENTER_VERTICAL);
	Resources res = snackbar.getResources();
	snackbar.setElevation(res.getDimension(R.dimen.snackbar_elevation));
	int padding = res.getDimensionPixelSize(R.dimen.snackbar_padding);
	snackbar.setPadding(padding, padding, padding, padding);
	snackbar.setBackgroundResource(R.drawable.round_rect_primary);

	snackbar.mIsOpen = true;
	BaseDragLayer dragLayer = activity.getDragLayer();
	dragLayer.addView(snackbar);

	DragLayer.LayoutParams params = (DragLayer.LayoutParams) snackbar.getLayoutParams();
	params.gravity = Gravity.CENTER_HORIZONTAL \| Gravity.BOTTOM;
	params.height = res.getDimensionPixelSize(R.dimen.snackbar_height);
	int maxMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_max_margin_left_right);
	int minMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_min_margin_left_right);
	int marginBottom = res.getDimensionPixelSize(R.dimen.snackbar_margin_bottom);
	int absoluteMaxWidth = res.getDimensionPixelSize(R.dimen.snackbar_max_width);
	Rect insets = activity.getDeviceProfile().getInsets();
	int maxWidth = Math.min(
	dragLayer.getWidth() - minMarginLeftRight * 2 - insets.left - insets.right,
	absoluteMaxWidth);
	int minWidth = Math.min(
	dragLayer.getWidth() - maxMarginLeftRight * 2 - insets.left - insets.right,
	absoluteMaxWidth);
	params.width = minWidth;
	DeviceProfile deviceProfile = activity.getDeviceProfile();
	params.setMargins(0, 0, 0, marginBottom
	+ (deviceProfile.isTaskbarPresent
	? deviceProfile.taskbarHeight + deviceProfile.getTaskbarOffsetY()
	: insets.bottom));

	TextView labelView = snackbar.findViewById(R.id.label);
	labelView.setText(labelString);

	TextView actionView = snackbar.findViewById(R.id.action);
	float actionWidth;
	if (actionStringResId != NO_ID) {
	String actionText = res.getString(actionStringResId);
	actionWidth = actionView.getPaint().measureText(actionText)
	+ actionView.getPaddingRight() + actionView.getPaddingLeft();
	actionView.setText(actionText);
	actionView.setOnClickListener(v -> {
	if (onActionClicked != null) {
	onActionClicked.run();
	}
	snackbar.mOnDismissed = null;
	snackbar.close(true);
	});
	} else {
	actionWidth = 0;
	actionView.setVisibility(GONE);
	}

	int totalContentWidth = (int) (labelView.getPaint().measureText(labelString.toString())
	+ actionWidth)
	+ labelView.getPaddingRight() + labelView.getPaddingLeft()
	+ padding * 2;
	if (totalContentWidth > params.width) {
	// The text doesn't fit in our standard width so update width to accommodate.
	if (totalContentWidth <= maxWidth) {
	params.width = totalContentWidth;
	} else {
	// One line will be cut off, fallback to 2 lines and smaller font. (This should only
	// happen in some languages if system display and font size are set to largest.)
	int textHeight = res.getDimensionPixelSize(R.dimen.snackbar_content_height);
	float textSizePx = res.getDimension(R.dimen.snackbar_min_text_size);
	labelView.setLines(2);
	labelView.getLayoutParams().height = textHeight * 2;
	actionView.getLayoutParams().height = textHeight * 2;
	labelView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
	actionView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
	params.height += textHeight;
	params.width = maxWidth;
	}
	}

	snackbar.mOnDismissed = onDismissed;
	snackbar.setAlpha(0);
	snackbar.setScaleX(0.8f);
	snackbar.setScaleY(0.8f);
	snackbar.animate()
	.alpha(1f)
	.withLayer()
	.scaleX(1)
	.scaleY(1)
	.setDuration(SHOW_DURATION_MS)
	.setInterpolator(Interpolators.ACCELERATE_DECELERATE)
	.start();
	int timeout = AccessibilityManagerCompat.getRecommendedTimeoutMillis(snackbar.getContext(),
	TIMEOUT_DURATION_MS, FLAG_CONTENT_TEXT \| FLAG_CONTENT_CONTROLS);
	snackbar.postDelayed(() -> snackbar.close(true), timeout);
	}

	@Override
	protected void handleClose(boolean animate) {
	if (mIsOpen) {
	if (animate) {
	animate().alpha(0f)
	.withLayer()
	.setStartDelay(0)
	.setDuration(HIDE_DURATION_MS)
	.setInterpolator(Interpolators.ACCELERATE)
	.withEndAction(this::onClosed)
	.start();
	} else {
	animate().cancel();
	onClosed();
	}
	mIsOpen = false;
	}
	}

	private void onClosed() {
	mActivity.getDragLayer().removeView(this);
	if (mOnDismissed != null) {
	mOnDismissed.run();
	}
	}

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

	@Override
	public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
	if (ev.getAction() == MotionEvent.ACTION_DOWN) {
	BaseDragLayer dl = mActivity.getDragLayer();
	if (!dl.isEventOverView(this, ev)) {
	close(true);
	}
	}
	return false;
	}
	}