packages/SystemUI/src/com/android/systemui/controls/ui/DetailDialog.kt

/*
 * Copyright (C) 2020 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.controls.ui

import android.app.ActivityOptions
import android.app.ActivityView
import android.app.PendingIntent
import android.app.Dialog
import android.content.ComponentName
import android.content.Intent
import android.provider.Settings
import android.view.View
import android.view.ViewGroup
import android.view.WindowInsets
import android.view.WindowInsets.Type
import android.view.WindowManager
import android.widget.ImageView

import com.android.internal.policy.ScreenDecorationsUtils
import com.android.systemui.R

/**
 * A dialog that provides an {@link ActivityView}, allowing the application to provide
 * additional information and actions pertaining to a {@link android.service.controls.Control}.
 * The activity being launched is specified by {@link android.service.controls.Control#getAppIntent}.
 */
class DetailDialog(
    val cvh: ControlViewHolder,
    val pendingIntent: PendingIntent
) : Dialog(cvh.context, R.style.Theme_SystemUI_Dialog_Control_DetailPanel) {
    companion object {
        private const val PANEL_TOP_OFFSET = "systemui.controls_panel_top_offset"
        /*
         * Indicate to the activity that it is being rendered in a bottomsheet, and they
         * should optimize the layout for a smaller space.
         */
        private const val EXTRA_USE_PANEL = "controls.DISPLAY_IN_PANEL"
    }

    private val fillInIntent = Intent().apply {
        putExtra(EXTRA_USE_PANEL, true)

        // Apply flags to make behaviour match documentLaunchMode=always.
        addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT)
        addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
    }

    var activityView = ActivityView(context, null, 0, false)

    val stateCallback: ActivityView.StateCallback = object : ActivityView.StateCallback() {
        override fun onActivityViewReady(view: ActivityView) {
            view.startActivity(pendingIntent, fillInIntent, ActivityOptions.makeBasic())
        }

        override fun onActivityViewDestroyed(view: ActivityView) {}

        override fun onTaskRemovalStarted(taskId: Int) {
            dismiss()
        }

        override fun onTaskCreated(taskId: Int, name: ComponentName?) {
            requireViewById<ViewGroup>(R.id.controls_activity_view).apply {
                setAlpha(1f)
            }
        }
    }

    init {
        window.setType(WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY)
        setContentView(R.layout.controls_detail_dialog)

        requireViewById<ViewGroup>(R.id.controls_activity_view).apply {
            addView(activityView)
            setAlpha(0f)
        }

        requireViewById<ImageView>(R.id.control_detail_close).apply {
            setOnClickListener { _: View -> dismiss() }
        }

        requireViewById<ImageView>(R.id.control_detail_open_in_app).apply {
            setOnClickListener { v: View ->
                dismiss()
                context.sendBroadcast(Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS))
                pendingIntent.send()
            }
        }

        // consume all insets to achieve slide under effect
        window.getDecorView().setOnApplyWindowInsetsListener {
            _: View, insets: WindowInsets ->
                activityView.apply {
                    val l = getPaddingLeft()
                    val t = getPaddingTop()
                    val r = getPaddingRight()
                    setPadding(l, t, r, insets.getInsets(Type.systemBars()).bottom)
                }

                WindowInsets.CONSUMED
        }

        requireViewById<ViewGroup>(R.id.control_detail_root).apply {
            // use flag only temporarily for testing
            val resolver = cvh.context.contentResolver
            val defaultOffsetInPx = cvh.context.resources
                .getDimensionPixelSize(R.dimen.controls_activity_view_top_offset)
            val offsetInPx = Settings.Secure.getInt(resolver, PANEL_TOP_OFFSET, defaultOffsetInPx)

            val lp = getLayoutParams() as ViewGroup.MarginLayoutParams
            lp.topMargin = offsetInPx
            setLayoutParams(lp)

            setOnClickListener { dismiss() }
            (getParent() as View).setOnClickListener { dismiss() }
        }

        if (ScreenDecorationsUtils.supportsRoundedCornersOnWindows(context.getResources())) {
            val cornerRadius = context.resources
                .getDimensionPixelSize(R.dimen.controls_activity_view_corner_radius)
            activityView.setCornerRadius(cornerRadius.toFloat())
        }
    }

    override fun show() {
        activityView.setCallback(stateCallback)

        super.show()
    }

    override fun dismiss() {
        if (!isShowing()) return
        activityView.release()

        super.dismiss()
    }
}