Merge "[Notif] Add custom view to made undo text push button down"

                style="@style/TextAppearance.NotificationInfo.Button"/>

        </LinearLayout>

    </LinearLayout>

    <RelativeLayout

    <com.android.systemui.statusbar.NotificationUndoLayout

        android:id="@+id/confirmation"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginBottom="@dimen/notification_guts_button_spacing"

        android:layout_marginTop="@dimen/notification_guts_button_spacing"

        android:layout_marginStart="@dimen/notification_guts_button_side_margin"

        android:layout_marginEnd="@dimen/notification_guts_button_side_margin"

        android:visibility="gone"

        android:orientation="horizontal" >

        <TextView

            android:id="@+id/confirmation_text"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_centerVertical="true"

            android:layout_gravity="start|center_vertical"

            android:layout_marginStart="@*android:dimen/notification_content_margin_start"

            android:layout_marginEnd="@*android:dimen/notification_content_margin_start"

            android:text="@string/notification_channel_disabled"

            style="@style/TextAppearance.NotificationInfo.Confirmation"/>

        <TextView

            android:id="@+id/undo"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignParentEnd="true"

            android:layout_centerVertical="true"

            android:layout_marginTop="@dimen/notification_guts_button_spacing"

            android:layout_marginBottom="@dimen/notification_guts_button_spacing"

            android:layout_marginStart="@dimen/notification_guts_button_side_margin"

            android:layout_marginEnd="@dimen/notification_guts_button_side_margin"

            android:layout_gravity="end|center_vertical"

            android:text="@string/inline_undo"

            style="@style/TextAppearance.NotificationInfo.Button"/>

    </RelativeLayout>

    </com.android.systemui.statusbar.NotificationUndoLayout>

</com.android.systemui.statusbar.NotificationInfo>

/*

 * 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.systemui.statusbar;

import android.content.Context;

import android.util.AttributeSet;

import android.view.View;

import android.widget.FrameLayout;

import com.android.systemui.R;

/**

 * Custom view for the NotificationInfo confirmation views so that the confirmation text can

 * occupy the full width of the notification and push the undo button down to the next line if

 * necessary.

 *

 * @see NotificationInfo

 */

public class NotificationUndoLayout extends FrameLayout {

    /**

     * View for the prompt/confirmation text to tell the user the previous action was successful.

     */

    private View mConfirmationTextView;

    /** Undo button (actionable text) view. */

    private View mUndoView;

    /**

     * Whether {@link #mConfirmationTextView} is multiline and will require the full width of the

     * parent (which causes the {@link #mUndoView} to push down).

     */

    private boolean mIsMultiline = false;

    private int mMultilineTopMargin;

    public NotificationUndoLayout(Context context) {

        this(context, null);

    }

    public NotificationUndoLayout(Context context, AttributeSet attrs) {

        this(context, attrs, 0);

    }

    public NotificationUndoLayout(Context context, AttributeSet attrs, int defStyleAttr) {

        super(context, attrs, defStyleAttr);

    }

    @Override

    protected void onFinishInflate() {

        super.onFinishInflate();

        mConfirmationTextView = findViewById(R.id.confirmation_text);

        mUndoView = findViewById(R.id.undo);

        mMultilineTopMargin = getResources().getDimensionPixelOffset(

                com.android.internal.R.dimen.notification_content_margin_start);

    }

    @Override

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        LayoutParams confirmationLayoutParams =

                (LayoutParams) mConfirmationTextView.getLayoutParams();

        LayoutParams undoLayoutParams =(LayoutParams) mUndoView.getLayoutParams();

        int measuredWidth = getMeasuredWidth();

        // Ignore the left margin on the undo button - no need for additional extra space between

        // the text and the button.

        int requiredWidth = mConfirmationTextView.getMeasuredWidth()

                + confirmationLayoutParams.rightMargin

                + confirmationLayoutParams.leftMargin

                + mUndoView.getMeasuredWidth()

                + undoLayoutParams.rightMargin;

        // If the measured width isn't enough to accommodate both the undo button and the text in

        // the same line, we'll need to adjust the view to be multi-line. Otherwise, we're done.

        if (requiredWidth > measuredWidth) {

            mIsMultiline = true;

            // Update height requirement to the text height and the button's height (along with

            // additional spacing for the top of the text).

            int updatedHeight = mMultilineTopMargin

                    + mConfirmationTextView.getMeasuredHeight()

                    + mUndoView.getMeasuredHeight()

                    + undoLayoutParams.topMargin

                    + undoLayoutParams.bottomMargin;

            setMeasuredDimension(measuredWidth, updatedHeight);

        } else {

            mIsMultiline = false;

        }

    }

    @Override

    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {

        // If the text view and undo view don't fit on the same line, we'll need to manually lay

        // out the content.

        if (mIsMultiline) {

            // Re-align parent right/bottom values. Left and top are considered to be 0.

            int parentBottom = getMeasuredHeight();

            int parentRight = getMeasuredWidth();

            LayoutParams confirmationLayoutParams =

                    (LayoutParams) mConfirmationTextView.getLayoutParams();

            LayoutParams undoLayoutParams = (LayoutParams) mUndoView.getLayoutParams();

            // The confirmation text occupies the full width as computed earlier. Both side margins

            // are equivalent, so we only need to grab the left one here.

            mConfirmationTextView.layout(

                    confirmationLayoutParams.leftMargin,

                    mMultilineTopMargin,

                    confirmationLayoutParams.leftMargin + mConfirmationTextView.getMeasuredWidth(),

                    mMultilineTopMargin + mConfirmationTextView.getMeasuredHeight());

            // The undo button is aligned bottom|end with the parent in the case of multiline text.

            int undoViewLeft = getLayoutDirection() == View.LAYOUT_DIRECTION_RTL

                    ? undoLayoutParams.rightMargin

                    : parentRight - mUndoView.getMeasuredWidth() - undoLayoutParams.rightMargin;

            mUndoView.layout(

                    undoViewLeft,

                    parentBottom - mUndoView.getMeasuredHeight() - undoLayoutParams.bottomMargin,

                    undoViewLeft + mUndoView.getMeasuredWidth(),

                    parentBottom - undoLayoutParams.bottomMargin);

        } else {

            super.onLayout(changed, left, top, right, bottom);

        }

    }

}