Introduce ThreadedInputConnection behind a switch

content/public/android/java/src/org/chromium/content/browser/input/ImeUtils.java

Index: content/public/android/java/src/org/chromium/content/browser/input/ImeUtils.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/ImeUtils.java b/content/public/android/java/src/org/chromium/content/browser/input/ImeUtils.java
new file mode 100644
index 0000000000000000000000000000000000000000..a7e56e9bff2f6016adc77dac1f7dde626de69a56
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/browser/input/ImeUtils.java
@@ -0,0 +1,138 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+package org.chromium.content.browser.input;
+
+import android.text.Editable;
+import android.text.InputType;
+import android.text.Selection;
+import android.util.StringBuilderPrinter;
+import android.view.inputmethod.BaseInputConnection;
+import android.view.inputmethod.CorrectionInfo;
+import android.view.inputmethod.EditorInfo;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.blink_public.web.WebTextInputFlags;
+import org.chromium.ui.base.ime.TextInputType;
+
+import java.util.Locale;
+
+/**
+ * Utilities for IME such as computing outAttrs, and dumping object information.
+ */
+public class ImeUtils {
+    public static void computeEditorInfo(int inputType, int inputFlags, int initialSelStart,
+            int initialSelEnd, EditorInfo outAttrs) {
+        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_FULLSCREEN | EditorInfo.IME_FLAG_NO_EXTRACT_UI;
+        outAttrs.inputType =
+                EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT;
+
+        if ((inputFlags & WebTextInputFlags.AutocompleteOff) != 0) {
+            outAttrs.inputType |= EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS;
+        }
+
+        if (inputType == TextInputType.TEXT) {
+            // Normal text field
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_GO;
+            if ((inputFlags & WebTextInputFlags.AutocorrectOff) == 0) {
+                outAttrs.inputType |= EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT;
+            }
+        } else if (inputType == TextInputType.TEXT_AREA
+                || inputType == TextInputType.CONTENT_EDITABLE) {
+            outAttrs.inputType |= EditorInfo.TYPE_TEXT_FLAG_MULTI_LINE;
+            if ((inputFlags & WebTextInputFlags.AutocorrectOff) == 0) {
+                outAttrs.inputType |= EditorInfo.TYPE_TEXT_FLAG_AUTO_CORRECT;
+            }
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_NONE;
+        } else if (inputType == TextInputType.PASSWORD) {
+            // Password
+            outAttrs.inputType =
+                    InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_WEB_PASSWORD;
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_GO;
+        } else if (inputType == TextInputType.SEARCH) {
+            // Search
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_SEARCH;
+        } else if (inputType == TextInputType.URL) {
+            // Url
+            outAttrs.inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_URI;
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_GO;
+        } else if (inputType == TextInputType.EMAIL) {
+            // Email
+            outAttrs.inputType =
+                    InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS;
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_GO;
+        } else if (inputType == TextInputType.TELEPHONE) {
+            // Telephone
+            // Number and telephone do not have both a Tab key and an
+            // action in default OSK, so set the action to NEXT
+            outAttrs.inputType = InputType.TYPE_CLASS_PHONE;
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
+        } else if (inputType == TextInputType.NUMBER) {
+            // Number
+            outAttrs.inputType = InputType.TYPE_CLASS_NUMBER
+                    | InputType.TYPE_NUMBER_VARIATION_NORMAL | InputType.TYPE_NUMBER_FLAG_DECIMAL;
+            outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
+        }
+
+        // Handling of autocapitalize. Blink will send the flag taking into account the element's
+        // type. This is not using AutocapitalizeNone because Android does not autocapitalize by
+        // default and there is no way to express no capitalization.
+        // Autocapitalize is meant as a hint to the virtual keyboard.
+        if ((inputFlags & WebTextInputFlags.AutocapitalizeCharacters) != 0) {
+            outAttrs.inputType |= InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS;
+        } else if ((inputFlags & WebTextInputFlags.AutocapitalizeWords) != 0) {
+            outAttrs.inputType |= InputType.TYPE_TEXT_FLAG_CAP_WORDS;
+        } else if ((inputFlags & WebTextInputFlags.AutocapitalizeSentences) != 0) {
+            outAttrs.inputType |= InputType.TYPE_TEXT_FLAG_CAP_SENTENCES;
+        }
+        // Content editable doesn't use autocapitalize so we need to set it manually.
+        if (inputType == TextInputType.CONTENT_EDITABLE) {
+            outAttrs.inputType |= InputType.TYPE_TEXT_FLAG_CAP_SENTENCES;
+        }
+
+        outAttrs.initialSelStart = initialSelStart;
+        outAttrs.initialSelEnd = initialSelEnd;
+    }
+
+    public static String dumpEditorInfo(EditorInfo editorInfo) {
+        StringBuilder builder = new StringBuilder();
+        StringBuilderPrinter printer = new StringBuilderPrinter(builder);
+        editorInfo.dump(printer, "");
+        return builder.toString();
+    }
+
+    public static String dumpEditable(Editable editable) {
+        return String.format(Locale.US, "Editable {[%s] SEL[%d %d] COM[%d %d]}",
+                editable.toString(), Selection.getSelectionStart(editable),
+                Selection.getSelectionEnd(editable),
+                BaseInputConnection.getComposingSpanStart(editable),
+                BaseInputConnection.getComposingSpanEnd(editable));
+    }
+
+    /**
+     * Dump the given {@CorrectionInfo} into class.
+     * @param correctionInfo
+     * @return User-readable {@CorrectionInfo}.
+     */
+    static String dumpCorrectionInfo(CorrectionInfo correctionInfo) {
+        // TODO(changwan): implement it properly if needed.
+        return correctionInfo.toString();
+    }
+
+    // TODO(changwan): remove these once implementation becomes stable.
+    static void assertReally(boolean value) {
+        if (!value) {
+            throw new AssertionError();
+        }
+    }
+
+    static void assertReally(String msg, boolean value) {
+        if (!value) {
+            throw new AssertionError(msg);
+        }
+    }
+
+    static void assertOnUiThread() {
+        assertReally("Should be on UI thread.", ThreadUtils.runningOnUiThread());
+    }
+}