Spell checkers or keyboards with auto-complete function are underlini…

…ng text while text is being typed in which case the toolbar would select the underline button. After the user hits space the word is complete and the underline would go away. By using a custom UnderlineSpan we can distinguish between "real" underlining (inserted by the rich text editor) and temporary underlining.

RTEditor/src/main/java/com/onegravity/rteditor/converter/ConverterHtmlToSpanned.java

@@ -30,7 +30,7 @@
 import android.text.style.StrikethroughSpan;
 import android.text.style.SubscriptSpan;
 import android.text.style.SuperscriptSpan;
-import android.text.style.UnderlineSpan;
+import com.onegravity.rteditor.spans.UnderlineSpan;
 
 import com.onegravity.rteditor.api.RTMediaFactory;
 import com.onegravity.rteditor.api.format.RTFormat;

RTEditor/src/main/java/com/onegravity/rteditor/converter/ConverterSpannedToHtml.java

@@ -26,7 +26,7 @@
 import android.text.style.SubscriptSpan;
 import android.text.style.SuperscriptSpan;
 import android.text.style.URLSpan;
-import android.text.style.UnderlineSpan;
+import com.onegravity.rteditor.spans.UnderlineSpan;
 
 import com.onegravity.rteditor.api.format.RTFormat;
 import com.onegravity.rteditor.api.format.RTHtml;

RTEditor/src/main/java/com/onegravity/rteditor/effects/UnderlineEffect.java

@@ -16,7 +16,7 @@
 
 package com.onegravity.rteditor.effects;
 
-import android.text.style.UnderlineSpan;
+import com.onegravity.rteditor.spans.UnderlineSpan;
 
 /**
  * Underlined text

RTEditor/src/main/java/com/onegravity/rteditor/spans/UnderlineSpan.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 Emanuel Moecklin
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.onegravity.rteditor.spans;
+
+/**
+ * Our custom UnderlineSpan.
+ * We need this to be able to distinguish between underlining done by the app and underlining
+ * inserted by e.g. a spell checker or a keyboard with auto-complete function.
+ */
+public class UnderlineSpan extends android.text.style.UnderlineSpan {}