Remove spans on copying or pasting a text

3 files changed, 118 insertions, 5 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/EditMessage.java b/src/main/java/de/pixart/messenger/ui/EditMessage.java
index 5415767e9..ea56e4d56 100644
--- a/src/main/java/de/pixart/messenger/ui/EditMessage.java
+++ b/src/main/java/de/pixart/messenger/ui/EditMessage.java
@@ -1,7 +1,11 @@
 package de.pixart.messenger.ui;
 
 import android.content.Context;
+import android.os.Build;
 import android.os.Handler;
+import android.text.Editable;
+import android.text.InputFilter;
+import android.text.Spanned;
 import android.util.AttributeSet;
 import android.view.KeyEvent;
 
@@ -89,4 +93,36 @@ public class EditMessage extends EmojiconEditText {
 		boolean onTabPressed(boolean repeated);
 	}
 
+    private static final InputFilter SPAN_FILTER = new InputFilter() {
+
+        @Override
+        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
+            return source instanceof Spanned ? source.toString() : source;
+        }
+    };
+
+    @Override
+    public boolean onTextContextMenuItem(int id) {
+        if (id == android.R.id.paste) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                return super.onTextContextMenuItem(android.R.id.pasteAsPlainText);
+            } else {
+                Editable editable = getEditableText();
+                InputFilter[] filters = editable.getFilters();
+                InputFilter[] tempFilters = new InputFilter[filters != null ? filters.length + 1 : 1];
+                if (filters != null) {
+                    System.arraycopy(filters, 0, tempFilters, 1, filters.length);
+                }
+                tempFilters[0] = SPAN_FILTER;
+                editable.setFilters(tempFilters);
+                try {
+                    return super.onTextContextMenuItem(id);
+                } finally {
+                    editable.setFilters(filters);
+                }
+            }
+        } else {
+            return super.onTextContextMenuItem(id);
+        }
+    }
 }
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
index 6dc6a9ed1..9e9ccb944 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
@@ -57,13 +57,14 @@ import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.ui.ConversationActivity;
 import de.pixart.messenger.ui.ShowFullscreenMessageActivity;
 import de.pixart.messenger.ui.widget.ClickableMovementMethod;
+import de.pixart.messenger.ui.widget.CopyTextView;
 import de.pixart.messenger.ui.widget.ListSelectionManager;
 import de.pixart.messenger.utils.CryptoHelper;
 import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.UIHelper;
 import nl.changer.audiowife.AudioWife;
 
-public class MessageAdapter extends ArrayAdapter<Message> {
+public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextView.CopyHandler {
 
 	private static final int SENT = 0;
 	private static final int RECEIVED = 1;
@@ -548,7 +549,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
                 viewHolder.edit_indicator = (ImageView) view.findViewById(R.id.edit_indicator);
                 viewHolder.image = (ImageView) view
                         .findViewById(R.id.message_image);
-                viewHolder.messageBody = (TextView) view
+                viewHolder.messageBody = (CopyTextView) view
                         .findViewById(R.id.message_body);
                 viewHolder.time = (TextView) view
                         .findViewById(R.id.message_time);
@@ -572,7 +573,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
                 viewHolder.edit_indicator = (ImageView) view.findViewById(R.id.edit_indicator);
                 viewHolder.image = (ImageView) view
                         .findViewById(R.id.message_image);
-                viewHolder.messageBody = (TextView) view
+                viewHolder.messageBody = (CopyTextView) view
                         .findViewById(R.id.message_body);
                 viewHolder.time = (TextView) view
                         .findViewById(R.id.message_time);
@@ -591,7 +592,10 @@ public class MessageAdapter extends ArrayAdapter<Message> {
                 viewHolder = null;
                 break;
         }
-        if (viewHolder.messageBody != null) listSelectionManager.onCreate(viewHolder.messageBody);
+        if (viewHolder.messageBody != null) {
+            listSelectionManager.onCreate(viewHolder.messageBody);
+            viewHolder.messageBody.setCopyHandler(this);
+        }
         view.setTag(viewHolder);
         if (viewHolder == null) {
             return view;
@@ -755,6 +759,11 @@ public class MessageAdapter extends ArrayAdapter<Message> {
         listSelectionManager.onAfterNotifyDataSetChanged();
     }
 
+    @Override
+    public String transformTextForCopy(CharSequence text, int start, int end) {
+        return text.toString().substring(start, end);
+    }
+
   public void openDownloadable(Message message) {
       DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
       if (!file.exists()) {
@@ -853,7 +862,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 		protected ImageView indicatorReceived;
 		protected ImageView indicatorRead;
 		protected TextView time;
-		protected TextView messageBody;
+		protected CopyTextView messageBody;
 		protected ImageView contact_picture;
 		protected TextView status_message;
 		protected TextView encryption;
diff --git a/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java b/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java
new file mode 100644
index 000000000..d7099b786
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java
@@ -0,0 +1,68 @@
+package de.pixart.messenger.ui.widget;
+
+import android.annotation.TargetApi;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Context;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+import github.ankushsachdeva.emojicon.EmojiconTextView;
+
+public class CopyTextView extends EmojiconTextView {
+
+    public CopyTextView(Context context) {
+        super(context);
+    }
+
+    public CopyTextView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CopyTextView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @SuppressWarnings("unused")
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    public CopyTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr); //, defStyleRes);
+    }
+
+    public interface CopyHandler {
+        public String transformTextForCopy(CharSequence text, int start, int end);
+    }
+
+    private CopyHandler copyHandler;
+
+    public void setCopyHandler(CopyHandler copyHandler) {
+        this.copyHandler = copyHandler;
+    }
+
+    @Override
+    public boolean onTextContextMenuItem(int id) {
+        CharSequence text = getText();
+        int min = 0;
+        int max = text.length();
+        if (isFocused()) {
+            final int selStart = getSelectionStart();
+            final int selEnd = getSelectionEnd();
+            min = Math.max(0, Math.min(selStart, selEnd));
+            max = Math.max(0, Math.max(selStart, selEnd));
+        }
+        String textForCopy = null;
+        if (id == android.R.id.copy && copyHandler != null) {
+            textForCopy = copyHandler.transformTextForCopy(getText(), min, max);
+        }
+        try {
+            return super.onTextContextMenuItem(id);
+        } finally {
+            if (textForCopy != null) {
+                ClipboardManager clipboard = (ClipboardManager) getContext().
+                        getSystemService(Context.CLIPBOARD_SERVICE);
+                clipboard.setPrimaryClip(ClipData.newPlainText(null, textForCopy));
+            }
+        }
+    }
+}
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