Activate preformat block on android platform

RELEASE-NOTES.txt

@@ -1,6 +1,7 @@
 1.19.0
 ------
 * [iOS] Fix crash dismissing bottom-sheet after device rotation.
+* [Android] Add support for Preformatted block.
 
 1.18.0
 ------

react-native-aztec/android/build.gradle

@@ -12,7 +12,7 @@ buildscript {
         wordpressUtilsVersion = '1.22'
         espressoVersion = '3.0.1'
 
-        aztecVersion = 'v1.3.34'
+        aztecVersion = '03dd2332c1deb7c26dac82a7638121ca7b4ca0fd'
     }
 
     repositories {

react-native-aztec/android/src/main/java/org/wordpress/mobile/ReactNativeAztec/ReactAztecText.java

@@ -3,6 +3,7 @@
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.res.TypedArray;
 import android.graphics.Rect;
 import android.os.Handler;
 import android.os.Looper;
@@ -23,11 +24,13 @@
 import com.facebook.react.views.textinput.ReactTextInputLocalData;
 import com.facebook.react.views.textinput.ScrollWatcher;
 
+import org.jetbrains.annotations.NotNull;
 import org.wordpress.aztec.AztecText;
 import org.wordpress.aztec.AztecTextFormat;
 import org.wordpress.aztec.ITextFormat;
 import org.wordpress.aztec.plugins.IAztecPlugin;
 import org.wordpress.aztec.plugins.IToolbarButton;
+import org.wordpress.aztec.watchers.EndOfBufferMarkerAdder;
 
 import java.util.ArrayList;
 import java.util.LinkedList;
@@ -39,6 +42,8 @@
 
 public class ReactAztecText extends AztecText {
 
+    private static final String PRE_TAG = "pre";
+
     private final InputMethodManager mInputMethodManager;
     // This flag is set to true when we set the text of the EditText explicitly. In that case, no
     // *TextChanged events should be triggered. This is less expensive than removing the text
@@ -166,6 +171,16 @@ public boolean onTextContextMenuItem(int id) {
         return super.onTextContextMenuItem(id);
     }
 
+    @Override
+    public float getPreformatBackgroundAlpha(@NotNull TypedArray styles) {
+        return 0;
+    }
+
+    @Override
+    public boolean shouldSkipTidying() {
+        return isPreTag();
+    }
+
     // VisibleForTesting from {@link TextInputEventsTestCase}.
     public void requestFocusFromJS() {
         mIsJSSettingFocus = true;
@@ -501,11 +516,18 @@ protected boolean isEnterPressedUnderway() {
     /**
      * This class will redirect *TextChanged calls to the listeners only in the case where the text
      * is changed by the user, and not explicitly set by JS.
+     *
+     * Update:
+     * There is a special case when block is preformatted.
+     * In that case we want to propagate TextWatcher method calls even if text is set from JS.
+     * Otherwise, couple of bugs will be introduced
+     * bug 1# https://github.com/wordpress-mobile/AztecEditor-Android/pull/869#issuecomment-552864686
+     * bug 2# https://github.com/wordpress-mobile/gutenberg-mobile/pull/1615#pullrequestreview-323274540
      */
     private class TextWatcherDelegator implements TextWatcher {
         @Override
         public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-            if (!mIsSettingTextFromJS && mListeners != null) {
+            if (shouldRedirectTextChangeCalls()) {
                 for (TextWatcher listener : mListeners) {
                     listener.beforeTextChanged(s, start, count, after);
                 }
@@ -514,7 +536,7 @@ public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 
         @Override
         public void onTextChanged(CharSequence s, int start, int before, int count) {
-            if (!mIsSettingTextFromJS && mListeners != null) {
+            if (shouldRedirectTextChangeCalls()) {
                 for (TextWatcher listener : mListeners) {
                     listener.onTextChanged(s, start, before, count);
                 }
@@ -525,11 +547,19 @@ public void onTextChanged(CharSequence s, int start, int before, int count) {
 
         @Override
         public void afterTextChanged(Editable s) {
-            if (!mIsSettingTextFromJS && mListeners != null) {
+            if (shouldRedirectTextChangeCalls()) {
                 for (TextWatcher listener : mListeners) {
                     listener.afterTextChanged(s);
                 }
             }
         }
     }
+
+    private boolean shouldRedirectTextChangeCalls() {
+        return (!mIsSettingTextFromJS || isPreTag()) && mListeners != null;
+    }
+
+    private boolean isPreTag() {
+        return !TextUtils.isEmpty(mTagName) && mTagName.equals(PRE_TAG);
+    }
 }

react-native-aztec/android/src/main/java/org/wordpress/mobile/ReactNativeAztec/ReactAztecTextFormatEnum.java

@@ -13,7 +13,8 @@ public enum ReactAztecTextFormatEnum {
     H3("h3", AztecTextFormat.FORMAT_HEADING_3),
     H4("h4", AztecTextFormat.FORMAT_HEADING_4),
     H5("h5", AztecTextFormat.FORMAT_HEADING_5),
-    H6("h6", AztecTextFormat.FORMAT_HEADING_6);
+    H6("h6", AztecTextFormat.FORMAT_HEADING_6),
+    PRE("pre", AztecTextFormat.FORMAT_PREFORMAT);
 
     private final String mTag;
     private final AztecTextFormat mAztecTextFormat;