libs/WindowManager/Shell/src/com/android/wm/shell/windowdecor/viewholder/DesktopModeWindowDecorationViewHolder.kt

package com.android.wm.shell.windowdecor.viewholder

import android.app.ActivityManager.RunningTaskInfo
import android.content.Context
import android.graphics.Color
import android.view.View

/**
 * Encapsulates the root [View] of a window decoration and its children to facilitate looking up
 * children (via findViewById) and updating to the latest data from [RunningTaskInfo].
 */
internal abstract class DesktopModeWindowDecorationViewHolder(rootView: View) {
    val context: Context = rootView.context

    /**
     * A signal to the view holder that new data is available and that the views should be updated
     * to reflect it.
     */
    abstract fun bindData(taskInfo: RunningTaskInfo)

    /**
     * Whether the caption items should use the 'light' color variant so that there's good contrast
     * with the caption background color.
     */
    protected fun shouldUseLightCaptionColors(taskInfo: RunningTaskInfo): Boolean {
        return Color.valueOf(taskInfo.taskDescription.statusBarColor).luminance() < 0.5
    }
}