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package ca.allanwang.kau.imagepicker
import android.content.Intent
import android.database.Cursor
import android.os.Bundle
import android.support.design.widget.AppBarLayout
import android.support.design.widget.CoordinatorLayout
import android.support.design.widget.FloatingActionButton
import android.support.v4.content.Loader
import android.support.v7.widget.LinearLayoutManager
import android.support.v7.widget.RecyclerView
import android.support.v7.widget.Toolbar
import android.widget.TextView
import ca.allanwang.kau.utils.*
import com.mikepenz.google_material_typeface_library.GoogleMaterial
/**
* Created by Allan Wang on 2017-07-04.
*
* Base activity for selecting images from storage
* Images are blurred when selected, and multiple images can be selected at a time.
* Having three layered images makes this slightly slower than [MediaPickerActivityOverlayBase]
*/
abstract class MediaPickerActivityBase(mediaType: MediaType) : MediaPickerCore<MediaItem>(mediaType) {
val coordinator: CoordinatorLayout by bindView(R.id.kau_coordinator)
val toolbar: Toolbar by bindView(R.id.kau_toolbar)
val selectionCount: TextView by bindView(R.id.kau_selection_count)
val recycler: RecyclerView by bindView(R.id.kau_recyclerview)
val fab: FloatingActionButton by bindView(R.id.kau_fab)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.kau_activity_image_picker)
selectionCount.setCompoundDrawables(null, null, GoogleMaterial.Icon.gmd_image.toDrawable(this, 18), null)
setSupportActionBar(toolbar)
supportActionBar?.apply {
setDisplayHomeAsUpEnabled(true)
setDisplayShowHomeEnabled(true)
setHomeAsUpIndicator(GoogleMaterial.Icon.gmd_close.toDrawable(this@MediaPickerActivityBase, 18))
}
toolbar.setNavigationOnClickListener { onBackPressed() }
initializeRecycler(recycler)
MediaItem.bindEvents(adapter)
adapter.withSelectionListener({ _, _ -> selectionCount.text = adapter.selections.size.toString() })
fab.apply {
show()
setIcon(GoogleMaterial.Icon.gmd_send)
setOnClickListener {
val selection = adapter.selectedItems
if (selection.isEmpty()) {
toast(R.string.kau_no_items_selected)
} else {
val intent = Intent()
val data = ArrayList(selection.map { it.data })
intent.putParcelableArrayListExtra(MEDIA_PICKER_RESULT, data)
setResult(RESULT_OK, intent)
finish()
}
}
hideOnDownwardsScroll(recycler)
}
loadItems()
}
override fun converter(model: MediaModel): MediaItem = MediaItem(model)
/**
* Decide whether the toolbar can hide itself
* We typically want this behaviour unless we don't have enough images
* to fill the entire screen. In that case we don't want the recyclerview to be scrollable
* which means the toolbar shouldn't scroll either
* @param scrollable true if scroll flags are enabled, false otherwise
*/
private fun setToolbarScrollable(scrollable: Boolean) {
val params = toolbar.layoutParams as AppBarLayout.LayoutParams
if (scrollable)
params.scrollFlags = AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS or AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL
else
params.scrollFlags = 0
}
override fun onLoadFinished(loader: Loader<Cursor>?, data: Cursor?) {
super.onLoadFinished(loader, data)
setToolbarScrollable((recycler.layoutManager as LinearLayoutManager).findLastCompletelyVisibleItemPosition() < adapter.getItemCount() - 1)
}
override fun onStatusChange(loaded: Boolean) {
setToolbarScrollable(loaded)
}
}
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