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Diffstat (limited to 'core-ui/src/main/kotlin/ca/allanwang/kau/ui/activities/ElasticRecyclerActivity.kt')
-rw-r--r-- | core-ui/src/main/kotlin/ca/allanwang/kau/ui/activities/ElasticRecyclerActivity.kt | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/core-ui/src/main/kotlin/ca/allanwang/kau/ui/activities/ElasticRecyclerActivity.kt b/core-ui/src/main/kotlin/ca/allanwang/kau/ui/activities/ElasticRecyclerActivity.kt new file mode 100644 index 0000000..1dcf14b --- /dev/null +++ b/core-ui/src/main/kotlin/ca/allanwang/kau/ui/activities/ElasticRecyclerActivity.kt @@ -0,0 +1,81 @@ +package ca.allanwang.kau.ui.activities + +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.v7.app.AppCompatActivity +import android.support.v7.widget.RecyclerView +import android.support.v7.widget.Toolbar +import android.transition.TransitionInflater +import ca.allanwang.kau.ui.R +import ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout +import ca.allanwang.kau.utils.bindView + +/** + * Created by Allan Wang on 2017-07-17. + * + * A generic activity comprised of an ElasticDragDismissFrameLayout, CoordinatorLayout, Toolbar, RecyclerView, and Fab + * [ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout] + * [android.support.v7.widget.RecyclerView] + * + * The recyclerview defaults to a linearlayoutmanager, and the adapter is automatically bounded + * + * The exit animation is set to slide out, but the entrance must be defined yourself + */ +abstract class ElasticRecyclerActivity() : AppCompatActivity() { + + val appBar: AppBarLayout by bindView(R.id.kau_appbar) + val toolbar: Toolbar by bindView(R.id.kau_toolbar) + val coordinator: CoordinatorLayout by bindView(R.id.kau_coordinator) + val draggableFrame: ElasticDragDismissFrameLayout by bindView(R.id.kau_draggable) + val recycler: RecyclerView by bindView(R.id.kau_recycler) + val fab: FloatingActionButton by bindView(R.id.kau_fab) + val configs = Configs() + + class Configs { + var exitTransitionBottom = R.transition.kau_exit_slide_bottom + var exitTransitionTop = R.transition.kau_exit_slide_top + } + + override final fun onCreate(savedInstanceState: Bundle?) { + super.onCreate(savedInstanceState) + setContentView(R.layout.kau_elastic_recycler_activity) + setSupportActionBar(toolbar) + if (!onCreate(savedInstanceState, configs)) return + draggableFrame.addListener(object : ElasticDragDismissFrameLayout.SystemChromeFader(this) { + override fun onDragDismissed() { + window.returnTransition = TransitionInflater.from(this@ElasticRecyclerActivity) + .inflateTransition(if (draggableFrame.translationY > 0) configs.exitTransitionBottom else configs.exitTransitionTop) + recycler.stopScroll() + finishAfterTransition() + } + }) + } + + /** + * The replacement method for the original [onCreate] + * The configurations are passed and can be customized here + * Returns true (default) if we wish to continue with the remaining optional setup + * Return false if we wish to skip this (usually if we have more complez requirements) + */ + abstract fun onCreate(savedInstanceState: Bundle?, configs: Configs): Boolean + + /** + * Receive actions when the a click event is received outside of the coordinator + */ + fun setOutsideTapListener(listener: () -> Unit) { + draggableFrame.setOnClickListener { listener() } + } + + fun hideFabOnUpwardsScroll() { + recycler.addOnScrollListener(object :RecyclerView.OnScrollListener(){ + override fun onScrolled(recyclerView: RecyclerView?, dx: Int, dy: Int) { + if (dy > 0 && fab.isShown) fab.hide() + else if (dy < 0 && !fab.isShown) fab.show() + } + }) + } + +} + |