First steps to implement pasting external content

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

@@ -130,6 +130,11 @@ public Map<String, Object> getExportedCustomBubblingEventTypeConstants() {
                         MapBuilder.of(
                                 "phasedRegistrationNames",
                                 MapBuilder.of("bubbled", "onBackspace")))
+                .put(
+                        "topTextInputPaste",
+                        MapBuilder.of(
+                                "phasedRegistrationNames",
+                                MapBuilder.of("bubbled", "onPaste")))
                 .put(
                         "topFocus",
                         MapBuilder.of(
@@ -375,6 +380,11 @@ public void setOnBackspaceHandling(final ReactAztecText view, boolean onBackspac
         view.shouldHandleOnBackspace = onBackspaceHandling;
     }
 
+    @ReactProp(name = "onPaste", defaultBoolean = false)
+    public void setOnPasteHandling(final ReactAztecText view, boolean onPasteHandling) {
+        view.shouldHandleOnPaste = onPasteHandling;
+    }
+
     @Override
     public Map<String, Integer> getCommandsMap() {
         return MapBuilder.<String, Integer>builder()

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

@@ -0,0 +1,56 @@
+package org.wordpress.mobile.ReactNativeAztec;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.uimanager.events.Event;
+import com.facebook.react.uimanager.events.RCTEventEmitter;
+
+/**
+ * Event emitted by Aztec native view when paste is detected.
+ */
+class ReactAztecPasteEvent extends Event<ReactAztecPasteEvent> {
+
+    private static final String EVENT_NAME = "topTextInputPaste";
+
+    private String mCurrentContent;
+    private int mSelectionStart;
+    private int mSelectionEnd;
+    private String mPastedText;
+    private String mPastedHtml;
+
+    public ReactAztecPasteEvent(int viewId, String currentContent, int selectionStart,
+                                int selectionEnd, String pastedText, String pastedHtml) {
+        super(viewId);
+        mCurrentContent = currentContent;
+        mSelectionStart = selectionStart;
+        mSelectionEnd = selectionEnd;
+        mPastedText = pastedText;
+        mPastedHtml = pastedHtml;
+    }
+
+    @Override
+    public String getEventName() {
+        return EVENT_NAME;
+    }
+
+    @Override
+    public boolean canCoalesce() {
+        return false;
+    }
+
+    @Override
+    public void dispatch(RCTEventEmitter rctEventEmitter) {
+        rctEventEmitter.receiveEvent(getViewTag(), getEventName(), serializeEventData());
+    }
+
+    private WritableMap serializeEventData() {
+        WritableMap eventData = Arguments.createMap();
+        eventData.putInt("target", getViewTag());
+        eventData.putString("currentContent", mCurrentContent);
+        eventData.putInt("selectionStart", mSelectionStart);
+        eventData.putInt("selectionEnd", mSelectionEnd);
+        eventData.putString("pastedText", mPastedText);
+        eventData.putString("pastedHtml", mPastedHtml);
+        return eventData;
+    }
+}

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

@@ -1,5 +1,7 @@
 package org.wordpress.mobile.ReactNativeAztec;
 
+import android.content.ClipData;
+import android.content.ClipboardManager;
 import android.content.Context;
 import android.graphics.Rect;
 import android.support.annotation.Nullable;
@@ -27,6 +29,8 @@
 import java.util.ArrayList;
 import java.util.LinkedList;
 
+import static android.content.ClipData.*;
+
 public class ReactAztecText extends AztecText {
 
     private final InputMethodManager mInputMethodManager;
@@ -49,6 +53,7 @@ public class ReactAztecText extends AztecText {
     String lastSentFormattingOptionsEventString = "";
     boolean shouldHandleOnEnter = false;
     boolean shouldHandleOnBackspace = false;
+    boolean shouldHandleOnPaste = false;
     boolean shouldHandleOnSelectionChange = false;
     boolean shouldHandleActiveFormatsChange = false;
 
@@ -100,6 +105,15 @@ void addPlugin(IAztecPlugin plugin) {
         }
     }
 
+    @Override
+    public boolean onTextContextMenuItem(int id) {
+        if (id == android.R.id.paste && shouldHandleOnPaste) {
+            return onPaste();
+        } else {
+            return super.onTextContextMenuItem(id);
+        }
+    }
+
     // VisibleForTesting from {@link TextInputEventsTestCase}.
     public void requestFocusFromJS() {
         mIsJSSettingFocus = true;
@@ -321,6 +335,39 @@ private boolean onBackspace() {
         return true;
     }
 
+    private boolean onPaste() {
+        ClipboardManager clipboardManager = (ClipboardManager) getContext().getSystemService(
+                Context.CLIPBOARD_SERVICE);
+
+        StringBuilder text = new StringBuilder();
+        StringBuilder html = new StringBuilder();
+
+        if (clipboardManager != null && clipboardManager.hasPrimaryClip()) {
+            ClipData clipData = clipboardManager.getPrimaryClip();
+            int itemCount = clipData.getItemCount();
+
+            for (int i = 0; i < itemCount; i++) {
+                Item item = clipData.getItemAt(i);
+                text.append(item.coerceToText(getContext()));
+                html.append(item.coerceToHtmlText(getContext()));
+            }
+        }
+
+        // temporarily disable listener during call to toHtml()
+        disableTextChangedListener();
+        String content = toHtml(false);
+        int cursorPositionStart = getSelectionStart();
+        int cursorPositionEnd = getSelectionEnd();
+        enableTextChangedListener();
+        ReactContext reactContext = (ReactContext) getContext();
+        EventDispatcher eventDispatcher = reactContext.getNativeModule(UIManagerModule.class)
+                .getEventDispatcher();
+        eventDispatcher.dispatchEvent(new ReactAztecPasteEvent(getId(), content,
+                cursorPositionStart, cursorPositionEnd, text.toString(), html.toString())
+        );
+        return true;
+    }
+
     public void applyFormat(String format) {
         ArrayList<ITextFormat> newFormats = new ArrayList<>();
         switch (format) {