X-Git-Url: https://git.mdrn.pl/wl-app.git/blobdiff_plain/48b2fe9f7c2dc3d9aeaaa6dbfb27c7da4f3235ff..269195b3729c1bdc22e9053ee4ebca667ea8549d:/Android/folioreader/src/main/java/com/folioreader/view/ObservableWebView.java

diff --git a/Android/folioreader/src/main/java/com/folioreader/view/ObservableWebView.java b/Android/folioreader/src/main/java/com/folioreader/view/ObservableWebView.java
new file mode 100755
index 0000000..afae6c3
--- /dev/null
+++ b/Android/folioreader/src/main/java/com/folioreader/view/ObservableWebView.java
@@ -0,0 +1,172 @@
+package com.folioreader.view;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.view.ActionMode;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.webkit.WebView;
+
+/**
+ * Created by mahavir on 3/31/16.
+ */
+public class ObservableWebView extends WebView {
+
+    private float mDownPosX = 0;
+    private float mDownPosY = 0;
+
+    public interface ScrollListener {
+        void onScrollChange(int percent);
+    }
+
+    public interface SeekBarListener {
+        void fadeInSeekBarIfInvisible();
+    }
+
+    public interface ToolBarListener {
+        void hideOrshowToolBar();
+        void hideToolBarIfVisible();
+    }
+
+    private ScrollListener mScrollListener;
+    private SeekBarListener mSeekBarListener;
+    private ToolBarListener mToolBarListener;
+
+    public ObservableWebView(Context context) {
+        super(context);
+    }
+
+    public ObservableWebView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ObservableWebView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    public ObservableWebView(Context context, AttributeSet attrs,
+                             int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    public void setScrollListener(ScrollListener listener) {
+        mScrollListener = listener;
+    }
+
+    public void setSeekBarListener(SeekBarListener listener) {
+        mSeekBarListener = listener;
+    }
+
+    public void setToolBarListener(ToolBarListener listener) {
+        mToolBarListener = listener;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        final int action = event.getAction();
+        float MOVE_THRESHOLD_DP = 20 * getResources().getDisplayMetrics().density;
+
+        switch (action) {
+            case MotionEvent.ACTION_DOWN:
+                mDownPosX = event.getX();
+                mDownPosY = event.getY();
+                if (mSeekBarListener != null) mSeekBarListener.fadeInSeekBarIfInvisible();
+                break;
+            case MotionEvent.ACTION_UP:
+                if (mToolBarListener != null &&
+                        (Math.abs(event.getX() - mDownPosX) < MOVE_THRESHOLD_DP
+                                || Math.abs(event.getY() - mDownPosY) < MOVE_THRESHOLD_DP)) {
+                    mToolBarListener.hideOrshowToolBar();
+                }
+                break;
+        }
+        return super.onTouchEvent(event);
+    }
+
+    @Override
+    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
+        if (mToolBarListener != null) mToolBarListener.hideToolBarIfVisible();
+        if (mScrollListener != null) mScrollListener.onScrollChange(t);
+        super.onScrollChanged(l, t, oldl, oldt);
+    }
+
+    public int getContentHeightVal() {
+        return (int) Math.floor(this.getContentHeight() * this.getScale());
+    }
+
+    public int getWebViewHeight() {
+        return this.getMeasuredHeight();
+    }
+
+    @Override
+    public ActionMode startActionMode(ActionMode.Callback callback, int type) {
+        return this.dummyActionMode();
+    }
+
+    @Override
+    public ActionMode startActionMode(ActionMode.Callback callback) {
+        return this.dummyActionMode();
+    }
+
+    public ActionMode dummyActionMode() {
+        return new ActionMode() {
+            @Override
+            public void setTitle(CharSequence title) {
+            }
+
+            @Override
+            public void setTitle(int resId) {
+            }
+
+            @Override
+            public void setSubtitle(CharSequence subtitle) {
+            }
+
+            @Override
+            public void setSubtitle(int resId) {
+            }
+
+            @Override
+            public void setCustomView(View view) {
+            }
+
+            @Override
+            public void invalidate() {
+            }
+
+            @Override
+            public void finish() {
+            }
+
+            @Override
+            public Menu getMenu() {
+                return null;
+            }
+
+            @Override
+            public CharSequence getTitle() {
+                return null;
+            }
+
+            @Override
+            public CharSequence getSubtitle() {
+                return null;
+            }
+
+            @Override
+            public View getCustomView() {
+                return null;
+            }
+
+            @Override
+            public MenuInflater getMenuInflater() {
+                return null;
+            }
+        };
+    }
+}