Move keyboard related internal class to separate package

Change-Id: Ic1459066b865cde5104b3734193f76c997959c68

1 files changed, 259 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/keyboard/internal/KeyStyles.java b/java/src/com/android/inputmethod/keyboard/internal/KeyStyles.java
new file mode 100644
index 000000000..dc2f4a15a
--- /dev/null
+++ b/java/src/com/android/inputmethod/keyboard/internal/KeyStyles.java
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2010 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.keyboard.internal;
+
+import com.android.inputmethod.keyboard.internal.KeyboardParser.ParseException;
+import com.android.inputmethod.latin.R;
+
+import android.content.res.TypedArray;
+import android.content.res.XmlResourceParser;
+import android.graphics.drawable.Drawable;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class KeyStyles {
+    private static final String TAG = "KeyStyles";
+    private static final boolean DEBUG = false;
+
+    private final HashMap<String, DeclaredKeyStyle> mStyles =
+            new HashMap<String, DeclaredKeyStyle>();
+    private static final KeyStyle EMPTY_KEY_STYLE = new EmptyKeyStyle();
+
+    public interface KeyStyle {
+        public CharSequence[] getTextArray(TypedArray a, int index);
+        public Drawable getDrawable(TypedArray a, int index);
+        public CharSequence getText(TypedArray a, int index);
+        public int getInt(TypedArray a, int index, int defaultValue);
+        public int getFlag(TypedArray a, int index, int defaultValue);
+        public boolean getBoolean(TypedArray a, int index, boolean defaultValue);
+    }
+
+    /* package */ static class EmptyKeyStyle implements KeyStyle {
+        private EmptyKeyStyle() {
+            // Nothing to do.
+        }
+
+        @Override
+        public CharSequence[] getTextArray(TypedArray a, int index) {
+            return parseTextArray(a, index);
+        }
+
+        @Override
+        public Drawable getDrawable(TypedArray a, int index) {
+            return a.getDrawable(index);
+        }
+
+        @Override
+        public CharSequence getText(TypedArray a, int index) {
+            return a.getText(index);
+        }
+
+        @Override
+        public int getInt(TypedArray a, int index, int defaultValue) {
+            return a.getInt(index, defaultValue);
+        }
+
+        @Override
+        public int getFlag(TypedArray a, int index, int defaultValue) {
+            return a.getInt(index, defaultValue);
+        }
+
+        @Override
+        public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
+            return a.getBoolean(index, defaultValue);
+        }
+
+        protected static CharSequence[] parseTextArray(TypedArray a, int index) {
+            if (!a.hasValue(index))
+                return null;
+            final CharSequence text = a.getText(index);
+            return parseCsvText(text);
+        }
+
+        /* package */ static CharSequence[] parseCsvText(CharSequence text) {
+            final int size = text.length();
+            if (size == 0) return null;
+            if (size == 1) return new CharSequence[] { text };
+            final StringBuilder sb = new StringBuilder();
+            ArrayList<CharSequence> list = null;
+            int start = 0;
+            for (int pos = 0; pos < size; pos++) {
+                final char c = text.charAt(pos);
+                if (c == ',') {
+                    if (list == null) list = new ArrayList<CharSequence>();
+                    if (sb.length() == 0) {
+                        list.add(text.subSequence(start, pos));
+                    } else {
+                        list.add(sb.toString());
+                        sb.setLength(0);
+                    }
+                    start = pos + 1;
+                    continue;
+                } else if (c == '\\') {
+                    if (start == pos) {
+                        // Skip escape character at the beginning of the value.
+                        start++;
+                        pos++;
+                    } else {
+                        if (start < pos && sb.length() == 0)
+                            sb.append(text.subSequence(start, pos));
+                        pos++;
+                        if (pos < size)
+                            sb.append(text.charAt(pos));
+                    }
+                } else if (sb.length() > 0) {
+                    sb.append(c);
+                }
+            }
+            if (list == null) {
+                return new CharSequence[] { sb.length() > 0 ? sb : text.subSequence(start, size) };
+            } else {
+                list.add(sb.length() > 0 ? sb : text.subSequence(start, size));
+                return list.toArray(new CharSequence[list.size()]);
+            }
+        }
+    }
+
+    private static class DeclaredKeyStyle extends EmptyKeyStyle {
+        private final HashMap<Integer, Object> mAttributes = new HashMap<Integer, Object>();
+
+        @Override
+        public CharSequence[] getTextArray(TypedArray a, int index) {
+            return a.hasValue(index)
+                    ? super.getTextArray(a, index) : (CharSequence[])mAttributes.get(index);
+        }
+
+        @Override
+        public Drawable getDrawable(TypedArray a, int index) {
+            return a.hasValue(index)
+                    ? super.getDrawable(a, index) : (Drawable)mAttributes.get(index);
+        }
+
+        @Override
+        public CharSequence getText(TypedArray a, int index) {
+            return a.hasValue(index)
+                    ? super.getText(a, index) : (CharSequence)mAttributes.get(index);
+        }
+
+        @Override
+        public int getInt(TypedArray a, int index, int defaultValue) {
+            final Integer value = (Integer)mAttributes.get(index);
+            return super.getInt(a, index, (value != null) ? value : defaultValue);
+        }
+
+        @Override
+        public int getFlag(TypedArray a, int index, int defaultValue) {
+            final Integer value = (Integer)mAttributes.get(index);
+            return super.getFlag(a, index, defaultValue) | (value != null ? value : 0);
+        }
+
+        @Override
+        public boolean getBoolean(TypedArray a, int index, boolean defaultValue) {
+            final Boolean value = (Boolean)mAttributes.get(index);
+            return super.getBoolean(a, index, (value != null) ? value : defaultValue);
+        }
+
+        private DeclaredKeyStyle() {
+            super();
+        }
+
+        private void parseKeyStyleAttributes(TypedArray keyAttr) {
+            // TODO: Currently not all Key attributes can be declared as style.
+            readInt(keyAttr, R.styleable.Keyboard_Key_code);
+            readText(keyAttr, R.styleable.Keyboard_Key_keyLabel);
+            readFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelOption);
+            readTextArray(keyAttr, R.styleable.Keyboard_Key_popupCharacters);
+            readInt(keyAttr, R.styleable.Keyboard_Key_maxPopupKeyboardColumn);
+            readText(keyAttr, R.styleable.Keyboard_Key_keyOutputText);
+            readDrawable(keyAttr, R.styleable.Keyboard_Key_keyIcon);
+            readDrawable(keyAttr, R.styleable.Keyboard_Key_iconPreview);
+            readText(keyAttr, R.styleable.Keyboard_Key_keyHintLetter);
+            readDrawable(keyAttr, R.styleable.Keyboard_Key_shiftedIcon);
+            readBoolean(keyAttr, R.styleable.Keyboard_Key_isFunctional);
+            readBoolean(keyAttr, R.styleable.Keyboard_Key_isSticky);
+            readBoolean(keyAttr, R.styleable.Keyboard_Key_isRepeatable);
+            readBoolean(keyAttr, R.styleable.Keyboard_Key_enabled);
+        }
+
+        private void readDrawable(TypedArray a, int index) {
+            if (a.hasValue(index))
+                mAttributes.put(index, a.getDrawable(index));
+        }
+
+        private void readText(TypedArray a, int index) {
+            if (a.hasValue(index))
+                mAttributes.put(index, a.getText(index));
+        }
+
+        private void readInt(TypedArray a, int index) {
+            if (a.hasValue(index))
+                mAttributes.put(index, a.getInt(index, 0));
+        }
+
+        private void readFlag(TypedArray a, int index) {
+            final Integer value = (Integer)mAttributes.get(index);
+            if (a.hasValue(index))
+                mAttributes.put(index, a.getInt(index, 0) | (value != null ? value : 0));
+        }
+
+        private void readBoolean(TypedArray a, int index) {
+            if (a.hasValue(index))
+                mAttributes.put(index, a.getBoolean(index, false));
+        }
+
+        private void readTextArray(TypedArray a, int index) {
+            final CharSequence[] value = parseTextArray(a, index);
+            if (value != null)
+                mAttributes.put(index, value);
+        }
+
+        private void addParent(DeclaredKeyStyle parentStyle) {
+            mAttributes.putAll(parentStyle.mAttributes);
+        }
+    }
+
+    public void parseKeyStyleAttributes(TypedArray keyStyleAttr, TypedArray keyAttrs,
+            XmlResourceParser parser) {
+        String styleName = keyStyleAttr.getString(R.styleable.Keyboard_KeyStyle_styleName);
+        if (DEBUG) Log.d(TAG, String.format("<%s styleName=%s />",
+                KeyboardParser.TAG_KEY_STYLE, styleName));
+        if (mStyles.containsKey(styleName))
+            throw new ParseException("duplicate key style declared: " + styleName, parser);
+
+        final DeclaredKeyStyle style = new DeclaredKeyStyle();
+        if (keyStyleAttr.hasValue(R.styleable.Keyboard_KeyStyle_parentStyle)) {
+            String parentStyle = keyStyleAttr.getString(
+                    R.styleable.Keyboard_KeyStyle_parentStyle);
+            final DeclaredKeyStyle parent = mStyles.get(parentStyle);
+            if (parent == null)
+                throw new ParseException("Unknown parentStyle " + parent, parser);
+            style.addParent(parent);
+        }
+        style.parseKeyStyleAttributes(keyAttrs);
+        mStyles.put(styleName, style);
+    }
+
+    public KeyStyle getKeyStyle(String styleName) {
+        return mStyles.get(styleName);
+    }
+
+    public KeyStyle getEmptyKeyStyle() {
+        return EMPTY_KEY_STYLE;
+    }
+}