Add button to allow selecting text in the description

Since now selection is disabled by default, this fixes #5453

app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java

@@ -5,11 +5,11 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
-import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
+import androidx.appcompat.widget.TooltipCompat;
 import androidx.core.text.HtmlCompat;
 
 import org.schabi.newpipe.BaseFragment;
@@ -35,6 +35,7 @@ public class DescriptionFragment extends BaseFragment {
     StreamInfo streamInfo = null;
     @Nullable
     Disposable descriptionDisposable = null;
+    FragmentDescriptionBinding binding;
 
     public DescriptionFragment() {
     }
@@ -47,11 +48,10 @@ public class DescriptionFragment extends BaseFragment {
     public View onCreateView(@NonNull final LayoutInflater inflater,
                              @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
-        final FragmentDescriptionBinding binding =
+        binding = FragmentDescriptionBinding.inflate(inflater, container, false);
-                FragmentDescriptionBinding.inflate(inflater, container, false);
         if (streamInfo != null) {
-            setupUploadDate(binding.detailUploadDateView);
+            setupUploadDate();
-            setupDescription(binding.detailDescriptionView);
+            setupDescription();
             setupMetadata(inflater, binding.detailMetadataLayout);
         }
         return binding.getRoot();
@@ -65,40 +65,82 @@ public class DescriptionFragment extends BaseFragment {
         }
     }
 
-    private void setupUploadDate(final TextView uploadDateTextView) {
+
+    private void setupUploadDate() {
         if (streamInfo.getUploadDate() != null) {
-            uploadDateTextView.setText(Localization
+            binding.detailUploadDateView.setText(Localization
                     .localizeUploadDate(activity, streamInfo.getUploadDate().offsetDateTime()));
         } else {
-            uploadDateTextView.setVisibility(View.GONE);
+            binding.detailUploadDateView.setVisibility(View.GONE);
         }
     }
 
-    private void setupDescription(final TextView descriptionTextView) {
+
+    private void setupDescription() {
         final Description description = streamInfo.getDescription();
         if (description == null || isEmpty(description.getContent())
                 || description == Description.emptyDescription) {
-            descriptionTextView.setVisibility(View.GONE);
+            binding.detailDescriptionView.setVisibility(View.GONE);
+            binding.detailSelectDescriptionButton.setVisibility(View.GONE);
             return;
         }
 
+        // start with disabled state. This also loads description content (!)
+        disableDescriptionSelection();
+
+        binding.detailSelectDescriptionButton.setOnClickListener(v -> {
+            if (binding.detailDescriptionNoteView.getVisibility() == View.VISIBLE) {
+                disableDescriptionSelection();
+            } else {
+                // enable selection only when button is clicked to prevent flickering
+                enableDescriptionSelection();
+            }
+        });
+    }
+
+    private void enableDescriptionSelection() {
+        binding.detailDescriptionNoteView.setVisibility(View.VISIBLE);
+        binding.detailDescriptionView.setTextIsSelectable(true);
+
+        final String buttonLabel = getString(R.string.description_select_disable);
+        binding.detailSelectDescriptionButton.setContentDescription(buttonLabel);
+        TooltipCompat.setTooltipText(binding.detailSelectDescriptionButton, buttonLabel);
+        binding.detailSelectDescriptionButton.setImageResource(R.drawable.ic_close);
+    }
+
+    private void disableDescriptionSelection() {
+        // show description content again, otherwise some links are not clickable
+        loadDescriptionContent();
+
+        binding.detailDescriptionNoteView.setVisibility(View.GONE);
+        binding.detailDescriptionView.setTextIsSelectable(false);
+
+        final String buttonLabel = getString(R.string.description_select_enable);
+        binding.detailSelectDescriptionButton.setContentDescription(buttonLabel);
+        TooltipCompat.setTooltipText(binding.detailSelectDescriptionButton, buttonLabel);
+        binding.detailSelectDescriptionButton.setImageResource(R.drawable.ic_select_all);
+    }
+
+    private void loadDescriptionContent() {
+        final Description description = streamInfo.getDescription();
         switch (description.getType()) {
             case Description.HTML:
                 descriptionDisposable = TextLinkifier.createLinksFromHtmlBlock(requireContext(),
-                        description.getContent(), descriptionTextView,
+                        description.getContent(), binding.detailDescriptionView,
                         HtmlCompat.FROM_HTML_MODE_LEGACY);
                 break;
             case Description.MARKDOWN:
                 descriptionDisposable = TextLinkifier.createLinksFromMarkdownText(requireContext(),
-                        description.getContent(), descriptionTextView);
+                        description.getContent(), binding.detailDescriptionView);
                 break;
             case Description.PLAIN_TEXT: default:
                 descriptionDisposable = TextLinkifier.createLinksFromPlainText(requireContext(),
-                        description.getContent(), descriptionTextView);
+                        description.getContent(), binding.detailDescriptionView);
                 break;
         }
     }
 
+
     private void setupMetadata(final LayoutInflater inflater,
                                final LinearLayout layout) {
         addMetadataItem(inflater, layout, false,
@@ -138,21 +180,23 @@ public class DescriptionFragment extends BaseFragment {
             return;
         }
 
-        final ItemMetadataBinding binding = ItemMetadataBinding.inflate(inflater, layout, false);
+        final ItemMetadataBinding itemBinding
-        binding.metadataTypeView.setText(type);
+                = ItemMetadataBinding.inflate(inflater, layout, false);
-        binding.metadataTypeView.setOnLongClickListener(v -> {
+
+        itemBinding.metadataTypeView.setText(type);
+        itemBinding.metadataTypeView.setOnLongClickListener(v -> {
             ShareUtils.copyToClipboard(requireContext(), content);
             return true;
         });
 
         if (linkifyContent) {
-            TextLinkifier.createLinksFromPlainText(layout.getContext(), content,
+            TextLinkifier.createLinksFromPlainText(requireContext(),
-                    binding.metadataContentView);
+                    content, itemBinding.metadataContentView);
         } else {
-            binding.metadataContentView.setText(content);
+            itemBinding.metadataContentView.setText(content);
         }
 
-        layout.addView(binding.getRoot());
+        layout.addView(itemBinding.getRoot());
     }
 
     private void addTagsMetadataItem(final LayoutInflater inflater, final LinearLayout layout) {
@@ -192,7 +236,7 @@ public class DescriptionFragment extends BaseFragment {
 
             if (contentRes != 0) {
                 addMetadataItem(inflater, layout, false,
-                        R.string.metadata_privacy, layout.getContext().getString(contentRes));
+                        R.string.metadata_privacy, getString(contentRes));
             }
         }
     }

app/src/main/res/drawable-night/ic_select_all.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#ffffff">
+  <path
+      android:fillColor="#ffffff"
+      android:pathData="M3,5h2L5,3c-1.1,0 -2,0.9 -2,2zM3,13h2v-2L3,11v2zM7,21h2v-2L7,19v2zM3,9h2L5,7L3,7v2zM13,3h-2v2h2L13,3zM19,3v2h2c0,-1.1 -0.9,-2 -2,-2zM5,21v-2L3,19c0,1.1 0.9,2 2,2zM3,17h2v-2L3,15v2zM9,3L7,3v2h2L9,3zM11,21h2v-2h-2v2zM19,13h2v-2h-2v2zM19,21c1.1,0 2,-0.9 2,-2h-2v2zM19,9h2L21,7h-2v2zM19,17h2v-2h-2v2zM15,21h2v-2h-2v2zM15,5h2L17,3h-2v2zM7,17h10L17,7L7,7v10zM9,9h6v6L9,15L9,9z"/>
+</vector>

app/src/main/res/drawable/ic_select_all.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#000000">
+  <path
+      android:fillColor="#000000"
+      android:pathData="M3,5h2L5,3c-1.1,0 -2,0.9 -2,2zM3,13h2v-2L3,11v2zM7,21h2v-2L7,19v2zM3,9h2L5,7L3,7v2zM13,3h-2v2h2L13,3zM19,3v2h2c0,-1.1 -0.9,-2 -2,-2zM5,21v-2L3,19c0,1.1 0.9,2 2,2zM3,17h2v-2L3,15v2zM9,3L7,3v2h2L9,3zM11,21h2v-2h-2v2zM19,13h2v-2h-2v2zM19,21c1.1,0 2,-0.9 2,-2h-2v2zM19,9h2L21,7h-2v2zM19,17h2v-2h-2v2zM15,21h2v-2h-2v2zM15,5h2L17,3h-2v2zM7,17h10L17,7L7,7v10zM9,9h6v6L9,15L9,9z"/>
+</vector>

app/src/main/res/layout/fragment_description.xml

@@ -9,7 +9,8 @@
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
-        android:layout_height="wrap_content">
+        android:layout_height="wrap_content"
+        android:animateLayoutChanges="true">
 
         <TextView
             android:id="@+id/detail_upload_date_view"
@@ -17,30 +18,69 @@
             android:layout_height="wrap_content"
             android:layout_marginStart="16dp"
             android:layout_marginTop="6dp"
-            android:layout_marginEnd="16dp"
+            android:layout_marginEnd="8dp"
             android:textAppearance="?android:attr/textAppearanceMedium"
             android:textSize="@dimen/video_item_detail_upload_date_text_size"
             android:textStyle="bold"
-            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/detail_select_description_button"
-            app:layout_constraintHorizontal_bias="0.0"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent"
             tools:text="Published on Oct 2, 2009" />
 
+        <ImageView
+            android:id="@+id/detail_select_description_button"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginEnd="16dp"
+            android:layout_marginBottom="2dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:clickable="true"
+            android:contentDescription="@string/description_select_enable"
+            android:focusable="true"
+            android:padding="5dp"
+            app:layout_constraintBottom_toTopOf="@+id/barrier"
+            app:layout_constraintDimensionRatio="1"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:srcCompat="@drawable/ic_select_all" />
+
+        <androidx.constraintlayout.widget.Barrier
+            android:id="@+id/barrier"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:barrierAllowsGoneWidgets="false"
+            app:barrierDirection="top"
+            app:constraint_referenced_ids="detail_description_note_view,detail_description_view" />
+
+        <TextView
+            android:id="@+id/detail_description_note_view"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="8dp"
+            android:layout_marginEnd="16dp"
+            android:gravity="center"
+            android:text="@string/description_select_note"
+            android:textSize="12sp"
+            android:textStyle="italic"
+            android:visibility="gone"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/detail_upload_date_view"
+            tools:visibility="visible" />
+
         <TextView
             android:id="@+id/detail_description_view"
-            android:layout_width="match_parent"
+            android:layout_width="0dp"
             android:layout_height="wrap_content"
             android:layout_marginStart="16dp"
             android:layout_marginTop="8dp"
             android:layout_marginEnd="16dp"
             android:textAppearance="?android:attr/textAppearanceMedium"
-            android:textIsSelectable="true"
             android:textSize="@dimen/video_item_detail_description_text_size"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/detail_upload_date_view"
+            app:layout_constraintTop_toBottomOf="@+id/detail_description_note_view"
-            app:layout_constraintVertical_bias="0.0"
             tools:text="Description Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed a ultricies ex. Integer sit amet sodales risus. Duis non mi et urna pretium bibendum." />
 
         <LinearLayout

app/src/main/res/values/strings.xml

@@ -716,6 +716,9 @@
     <string name="night_theme_summary">Select your favorite night theme — %s</string>
     <string name="select_night_theme_toast">You can select your favorite night theme below</string>
     <string name="download_has_started">Download has started</string>
+    <string name="description_select_note">You can now select text inside the description. Note that the page may flicker and links may not be clickable while in selection mode.</string>
+    <string name="description_select_enable">Enable selecting text in the description</string>
+    <string name="description_select_disable">Disable selecting text in the description</string>
     <string name="metadata_category">Category</string>
     <string name="metadata_tags">Tags</string>
     <string name="metadata_licence">Licence</string>