From e33120d454aeb72acc2c1315bddea31dd2f15bb2 Mon Sep 17 00:00:00 2001 From: Allan Wang Date: Mon, 29 May 2017 15:05:26 -0700 Subject: initial port --- .../com/pitchedapps/frost/views/FrostWebView.kt | 138 +++++++++++++++++++++ .../pitchedapps/frost/views/SwipeRefreshBase.kt | 31 +++++ 2 files changed, 169 insertions(+) create mode 100644 app/src/main/kotlin/com/pitchedapps/frost/views/FrostWebView.kt create mode 100644 app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshBase.kt (limited to 'app/src/main/kotlin/com/pitchedapps/frost/views') diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/FrostWebView.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/FrostWebView.kt new file mode 100644 index 00000000..e7314c20 --- /dev/null +++ b/app/src/main/kotlin/com/pitchedapps/frost/views/FrostWebView.kt @@ -0,0 +1,138 @@ +package com.pitchedapps.frost.views + +import android.annotation.SuppressLint +import android.content.Context +import android.graphics.Bitmap +import android.support.v4.view.MotionEventCompat +import android.support.v4.view.NestedScrollingChild +import android.support.v4.view.NestedScrollingChildHelper +import android.support.v4.view.ViewCompat +import android.util.AttributeSet +import android.view.MotionEvent +import android.view.View +import android.webkit.WebResourceError +import android.webkit.WebResourceRequest +import android.webkit.WebView +import android.webkit.WebViewClient +import com.pitchedapps.frost.utils.L +import io.reactivex.subjects.BehaviorSubject +import io.reactivex.subjects.Subject + +enum class WebStatus { + LOADING, LOADED, ERROR +} + +/** + * Created by Allan Wang on 2017-05-29. + * + * Courtesy of takahirom + * + * https://github.com/takahirom/webview-in-coordinatorlayout/blob/master/app/src/main/java/com/github/takahirom/webview_in_coodinator_layout/NestedWebView.java + */ +class FrostWebView @JvmOverloads constructor( + context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0 +) : WebView(context, attrs, defStyleAttr), NestedScrollingChild { + + private val childHelper = NestedScrollingChildHelper(this) + private var lastY: Int = 0 + private val scrollOffset = IntArray(2) + private val scrollConsumed = IntArray(2) + private var nestedOffsetY: Int = 0 + val observable: Subject + + init { + isNestedScrollingEnabled = true + observable = BehaviorSubject.create() + setupWebview() + } + + @SuppressLint("SetJavaScriptEnabled") + fun setupWebview() { + settings.javaScriptEnabled = true + setLayerType(View.LAYER_TYPE_HARDWARE, null) + setWebViewClient(object : WebViewClient() { + override fun onReceivedError(view: WebView?, request: WebResourceRequest?, error: WebResourceError?) { + super.onReceivedError(view, request, error) + observable.onNext(WebStatus.ERROR) + L.e("Error ${request}") + } + + override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) { + super.onPageStarted(view, url, favicon) + observable.onNext(WebStatus.LOADING) + } + + override fun onPageFinished(view: WebView?, url: String?) { + super.onPageFinished(view, url) + observable.onNext(WebStatus.LOADED) +// CookieManager.getInstance().flush() + } + }) + } + + override fun onTouchEvent(ev: MotionEvent): Boolean { + val event = MotionEvent.obtain(ev) + val action = MotionEventCompat.getActionMasked(event) + if (action == MotionEvent.ACTION_DOWN) + nestedOffsetY = 0 + val eventY = event.y.toInt() + event.offsetLocation(0f, nestedOffsetY.toFloat()) + val returnValue: Boolean + when (action) { + MotionEvent.ACTION_MOVE -> { + var deltaY = lastY - eventY + // NestedPreScroll + if (dispatchNestedPreScroll(0, deltaY, scrollConsumed, scrollOffset)) { + deltaY -= scrollConsumed[1] + event.offsetLocation(0f, -scrollOffset[1].toFloat()) + nestedOffsetY += scrollOffset[1] + } + lastY = eventY - scrollOffset[1] + returnValue = super.onTouchEvent(event) + // NestedScroll + if (dispatchNestedScroll(0, scrollOffset[1], 0, deltaY, scrollOffset)) { + event.offsetLocation(0f, scrollOffset[1].toFloat()) + nestedOffsetY += scrollOffset[1] + lastY -= scrollOffset[1] + } + } + MotionEvent.ACTION_DOWN -> { + returnValue = super.onTouchEvent(event) + lastY = eventY + startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL) + } + MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> { + returnValue = super.onTouchEvent(event) + stopNestedScroll() + } + else -> return false + } + return returnValue + } + + // Nested Scroll implements + override fun setNestedScrollingEnabled(enabled: Boolean) { + childHelper.isNestedScrollingEnabled = enabled + } + + override fun isNestedScrollingEnabled() = childHelper.isNestedScrollingEnabled + + override fun startNestedScroll(axes: Int) = childHelper.startNestedScroll(axes) + + override fun stopNestedScroll() = childHelper.stopNestedScroll() + + override fun hasNestedScrollingParent() = childHelper.hasNestedScrollingParent() + + override fun dispatchNestedScroll(dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, offsetInWindow: IntArray?) + = childHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow) + + override fun dispatchNestedPreScroll(dx: Int, dy: Int, consumed: IntArray?, offsetInWindow: IntArray?) + = childHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow) + + override fun dispatchNestedFling(velocityX: Float, velocityY: Float, consumed: Boolean) + = childHelper.dispatchNestedFling(velocityX, velocityY, consumed) + + override fun dispatchNestedPreFling(velocityX: Float, velocityY: Float) + = childHelper.dispatchNestedPreFling(velocityX, velocityY) + +} \ No newline at end of file diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshBase.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshBase.kt new file mode 100644 index 00000000..59d42722 --- /dev/null +++ b/app/src/main/kotlin/com/pitchedapps/frost/views/SwipeRefreshBase.kt @@ -0,0 +1,31 @@ +package com.pitchedapps.frost.views + +import android.content.Context +import android.support.v4.widget.SwipeRefreshLayout +import android.util.AttributeSet +import android.view.MotionEvent +import android.webkit.WebView +import com.pitchedapps.frost.utils.L +import com.pitchedapps.frost.utils.Utils + + +/** + * Created by Allan Wang on 2017-05-28. + */ +class SwipeRefreshBase @JvmOverloads constructor( + context: Context?, attrs: AttributeSet? = null +) : SwipeRefreshLayout(context, attrs) { + + lateinit var shouldSwipe: (ev: MotionEvent) -> Boolean + + companion object { + private val SCROLL_BUFFER by lazy { Utils.dpToPx(5) } + fun shouldScroll(webview: WebView) = webview.scrollY <= SCROLL_BUFFER + } + +// override fun onInterceptTouchEvent(ev: MotionEvent):Boolean { +// val b = shouldSwipe.invoke(ev) && super.onInterceptTouchEvent(ev) +// L.e("Should swipe $b") +// return b +// } +} \ No newline at end of file -- cgit v1.2.3