Merge pull request #3813 from ByteHamster/shownotes-webview

ShownotesWebView improvements

1 files changed, 167 insertions, 0 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/view/ShownotesWebView.java b/app/src/main/java/de/danoeh/antennapod/view/ShownotesWebView.java
new file mode 100644
index 000000000..3ea57eb5e
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/view/ShownotesWebView.java
@@ -0,0 +1,167 @@
+package de.danoeh.antennapod.view;
+
+import android.content.ClipData;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Color;
+import android.net.Uri;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.ContextMenu;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import androidx.core.content.ContextCompat;
+import com.google.android.material.snackbar.Snackbar;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.core.preferences.UserPreferences;
+import de.danoeh.antennapod.core.util.Consumer;
+import de.danoeh.antennapod.core.util.Converter;
+import de.danoeh.antennapod.core.util.IntentUtils;
+import de.danoeh.antennapod.core.util.NetworkUtils;
+import de.danoeh.antennapod.core.util.ShareUtils;
+import de.danoeh.antennapod.core.util.playback.Timeline;
+
+public class ShownotesWebView extends WebView implements View.OnLongClickListener {
+    private static final String TAG = "ShownotesWebView";
+
+    /**
+     * URL that was selected via long-press.
+     */
+    private String selectedUrl;
+    private Consumer<Integer> timecodeSelectedListener;
+    private Runnable pageFinishedListener;
+
+    public ShownotesWebView(Context context) {
+        super(context);
+        setup();
+    }
+
+    public ShownotesWebView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setup();
+    }
+
+    public ShownotesWebView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        setup();
+    }
+
+    private void setup() {
+        setBackgroundColor(Color.TRANSPARENT);
+        if (!NetworkUtils.networkAvailable()) {
+            getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
+            // Use cached resources, even if they have expired
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
+        }
+        getSettings().setUseWideViewPort(false);
+        getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
+        getSettings().setLoadWithOverviewMode(true);
+        setOnLongClickListener(this);
+
+        setWebViewClient(new WebViewClient() {
+            @Override
+            public boolean shouldOverrideUrlLoading(WebView view, String url) {
+                if (Timeline.isTimecodeLink(url) && timecodeSelectedListener != null) {
+                    timecodeSelectedListener.accept(Timeline.getTimecodeLinkTime(selectedUrl));
+                } else {
+                    IntentUtils.openInBrowser(getContext(), url);
+                }
+                return true;
+            }
+
+            @Override
+            public void onPageFinished(WebView view, String url) {
+                super.onPageFinished(view, url);
+                Log.d(TAG, "Page finished");
+                if (pageFinishedListener != null) {
+                    pageFinishedListener.run();
+                }
+            }
+        });
+    }
+
+    @Override
+    public boolean onLongClick(View v) {
+        WebView.HitTestResult r = getHitTestResult();
+        if (r != null && r.getType() == WebView.HitTestResult.SRC_ANCHOR_TYPE) {
+            Log.d(TAG, "Link of webview was long-pressed. Extra: " + r.getExtra());
+            selectedUrl = r.getExtra();
+            showContextMenu();
+            return true;
+        }
+        selectedUrl = null;
+        return false;
+    }
+
+    public boolean onContextItemSelected(MenuItem item) {
+        if (selectedUrl == null) {
+            return false;
+        }
+
+        switch (item.getItemId()) {
+            case R.id.open_in_browser_item:
+                IntentUtils.openInBrowser(getContext(), selectedUrl);
+                break;
+            case R.id.share_url_item:
+                ShareUtils.shareLink(getContext(), selectedUrl);
+                break;
+            case R.id.copy_url_item:
+                ClipData clipData = ClipData.newPlainText(selectedUrl, selectedUrl);
+                android.content.ClipboardManager cm = (android.content.ClipboardManager) getContext()
+                        .getSystemService(Context.CLIPBOARD_SERVICE);
+                cm.setPrimaryClip(clipData);
+                Snackbar.make(this, R.string.copied_url_msg, Snackbar.LENGTH_LONG).show();
+                break;
+            case R.id.go_to_position_item:
+                if (Timeline.isTimecodeLink(selectedUrl) && timecodeSelectedListener != null) {
+                    timecodeSelectedListener.accept(Timeline.getTimecodeLinkTime(selectedUrl));
+                } else {
+                    Log.e(TAG, "Selected go_to_position_item, but URL was no timecode link: " + selectedUrl);
+                }
+                break;
+            default:
+                selectedUrl = null;
+                return false;
+
+        }
+        selectedUrl = null;
+        return true;
+    }
+
+    @Override
+    protected void onCreateContextMenu(ContextMenu menu) {
+        super.onCreateContextMenu(menu);
+        if (selectedUrl == null) {
+            return;
+        }
+
+        if (Timeline.isTimecodeLink(selectedUrl)) {
+            menu.add(Menu.NONE, R.id.go_to_position_item, Menu.NONE, R.string.go_to_position_label);
+            menu.setHeaderTitle(Converter.getDurationStringLong(Timeline.getTimecodeLinkTime(selectedUrl)));
+        } else {
+            Uri uri = Uri.parse(selectedUrl);
+            final Intent intent = new Intent(Intent.ACTION_VIEW, uri);
+            if (IntentUtils.isCallable(getContext(), intent)) {
+                menu.add(Menu.NONE, R.id.open_in_browser_item, Menu.NONE, R.string.open_in_browser_label);
+            }
+            menu.add(Menu.NONE, R.id.copy_url_item, Menu.NONE, R.string.copy_url_label);
+            menu.add(Menu.NONE, R.id.share_url_item, Menu.NONE, R.string.share_url_label);
+            menu.setHeaderTitle(selectedUrl);
+        }
+    }
+
+    public void setTimecodeSelectedListener(Consumer<Integer> timecodeSelectedListener) {
+        this.timecodeSelectedListener = timecodeSelectedListener;
+    }
+
+    public void setPageFinishedListener(Runnable pageFinishedListener) {
+        this.pageFinishedListener = pageFinishedListener;
+    }
+}