Make a wrapper for the input connection.

The goal is to simplify the code in LatinIME.java as well as having
a handy place to put debug calls to see interaction with TextView.

Change-Id: I255227e7e7343e0c2f3dcd1f185e5020d6186732

1 files changed, 122 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/RichInputConnection.java b/java/src/com/android/inputmethod/latin/RichInputConnection.java
new file mode 100644
index 000000000..449d08e9b
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/RichInputConnection.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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.android.inputmethod.latin;
+
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.inputmethod.CompletionInfo;
+import android.view.inputmethod.CorrectionInfo;
+import android.view.inputmethod.InputConnection;
+
+/**
+ * Wrapper for InputConnection to simplify interaction
+ */
+public class RichInputConnection {
+    private static final String TAG = RichInputConnection.class.getSimpleName();
+    private static final boolean DBG = false;
+    InputConnection mIC;
+    int mNestLevel;
+    public RichInputConnection() {
+        mIC = null;
+        mNestLevel = 0;
+    }
+
+    // TODO: remove this method - the whole point of this class is void if mIC is escaping
+    public InputConnection getInputConnection() {
+        return mIC;
+    }
+
+    public void beginBatchEdit(final InputConnection newInputConnection) {
+        if (++mNestLevel == 1) {
+            mIC = newInputConnection;
+            if (null != mIC) mIC.beginBatchEdit();
+        } else {
+            if (DBG) {
+                throw new RuntimeException("Nest level too deep");
+            } else {
+                Log.e(TAG, "Nest level too deep : " + mNestLevel);
+            }
+        }
+    }
+    public void endBatchEdit() {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (--mNestLevel == 0 && null != mIC) mIC.endBatchEdit();
+    }
+
+    public void finishComposingText() {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.finishComposingText();
+    }
+
+    public void commitText(final CharSequence text, final int i) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.commitText(text, i);
+    }
+
+    public int getCursorCapsMode(final int inputType) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null == mIC) return Constants.TextUtils.CAP_MODE_OFF;
+        return mIC.getCursorCapsMode(inputType);
+    }
+
+    public CharSequence getTextBeforeCursor(final int i, final int j) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) return mIC.getTextBeforeCursor(i, j);
+        return null;
+    }
+
+    public CharSequence getTextAfterCursor(final int i, final int j) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) return mIC.getTextAfterCursor(i, j);
+        return null;
+    }
+
+    public void deleteSurroundingText(final int i, final int j) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.deleteSurroundingText(i, j);
+    }
+
+    public void performEditorAction(final int actionId) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.performEditorAction(actionId);
+    }
+
+    public void sendKeyEvent(final KeyEvent keyEvent) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.sendKeyEvent(keyEvent);
+    }
+
+    public void setComposingText(final CharSequence text, final int i) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.setComposingText(text, i);
+    }
+
+    public void setSelection(final int from, final int to) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.setSelection(from, to);
+    }
+
+    public void commitCorrection(final CorrectionInfo correctionInfo) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.commitCorrection(correctionInfo);
+    }
+
+    public void commitCompletion(final CompletionInfo completionInfo) {
+        if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
+        if (null != mIC) mIC.commitCompletion(completionInfo);
+    }
+}