diff options
Diffstat (limited to 'app/src/main/kotlin')
| -rw-r--r-- | app/src/main/kotlin/com/pitchedapps/frost/activities/LoginActivity.kt | 3 | ||||
| -rw-r--r-- | app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt | 78 |
2 files changed, 81 insertions, 0 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/activities/LoginActivity.kt b/app/src/main/kotlin/com/pitchedapps/frost/activities/LoginActivity.kt index ed207896..42a0f6bb 100644 --- a/app/src/main/kotlin/com/pitchedapps/frost/activities/LoginActivity.kt +++ b/app/src/main/kotlin/com/pitchedapps/frost/activities/LoginActivity.kt @@ -87,6 +87,9 @@ class LoginActivity : BaseActivity() { toolbar(toolbar) } profileLoader = GlideApp.with(profile) + swipeRefresh.setOnChildScrollUpCallback { parent, child -> + web.canScrollVertically(-1) + } launch { for (refreshing in refreshChannel.uniqueOnly(this)) { if (refreshing) swipeRefresh.isEnabled = true diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt new file mode 100644 index 00000000..0ab11fc6 --- /dev/null +++ b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshLayout.kt @@ -0,0 +1,78 @@ +package com.pitchedapps.frost.views + +import android.content.Context +import android.util.AttributeSet +import android.view.MotionEvent +import android.view.View +import android.view.ViewConfiguration +import android.webkit.WebView +import android.widget.ListView +import androidx.core.widget.ListViewCompat +import androidx.swiperefreshlayout.widget.SwipeRefreshLayout +import androidx.swiperefreshlayout.widget.SwipeRefreshLayout.OnChildScrollUpCallback +import com.pitchedapps.frost.utils.L + +/** + * Variant that forbids refreshing if child layout is not at the top + * Inspired by https://github.com/slapperwan/gh4a/blob/master/app/src/main/java/com/gh4a/widget/SwipeRefreshLayout.java + * + */ +class SwipeRefreshLayout @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) : + SwipeRefreshLayout(context, attrs) { + + private var preventRefresh: Boolean = false + private var downY: Float = -1f + private val touchSlop = ViewConfiguration.get(context).scaledTouchSlop + + /** + * Copy of [canChildScrollUp], with additional support if necessary + */ + private val canChildScrollUp = OnChildScrollUpCallback { parent, child -> + when (child) { + is WebView -> child.canScrollVertically(-1).apply { + L.d { "Webview can scroll up $this" } + } + is ListView -> ListViewCompat.canScrollList(child, -1) + // Supports webviews as well + else -> child?.canScrollVertically(-1) ?: false + } + } + + init { + setOnChildScrollUpCallback(canChildScrollUp) + } + + override fun onInterceptTouchEvent(ev: MotionEvent): Boolean { + if (ev.action != MotionEvent.ACTION_DOWN && preventRefresh) { + return false + } + when (ev.action) { + MotionEvent.ACTION_DOWN -> { + downY = ev.y + preventRefresh = canChildScrollUp() + } + MotionEvent.ACTION_MOVE -> { + if (downY - ev.y > touchSlop) { + preventRefresh = true + return false + } + } + } + return super.onInterceptTouchEvent(ev) + } + + override fun onNestedScroll(target: View, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int) { + if (preventRefresh) { + /* + * Ignoring offsetInWindow since + * 1. It doesn't seem to matter in the typical use case + * 2. It isn't being transferred to the underlying array used by the super class + */ + dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, null) + } else { + super.onNestedScroll(target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed) + } + } + + interface OnRefreshListener : SwipeRefreshLayout.OnRefreshListener +}
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