1 files changed, 341 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/settings/CustomInputStylePreference.java b/java/src/org/kelar/inputmethod/latin/settings/CustomInputStylePreference.java
new file mode 100644
index 000000000..0f4cd0da3
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/settings/CustomInputStylePreference.java
@@ -0,0 +1,341 @@
+/*
+ * Copyright (C) 2014 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 org.kelar.inputmethod.latin.settings;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.preference.DialogPreference;
+import android.preference.Preference;
+import android.util.Log;
+import android.view.View;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.InputMethodSubtype;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.SpinnerAdapter;
+
+import org.kelar.inputmethod.compat.InputMethodSubtypeCompatUtils;
+import org.kelar.inputmethod.compat.ViewCompatUtils;
+import org.kelar.inputmethod.latin.R;
+import org.kelar.inputmethod.latin.RichInputMethodManager;
+import org.kelar.inputmethod.latin.utils.AdditionalSubtypeUtils;
+import org.kelar.inputmethod.latin.utils.SubtypeLocaleUtils;
+
+import java.util.TreeSet;
+
+final class CustomInputStylePreference extends DialogPreference
+        implements DialogInterface.OnCancelListener {
+    private static final boolean DEBUG_SUBTYPE_ID = false;
+
+    interface Listener {
+        public void onRemoveCustomInputStyle(CustomInputStylePreference stylePref);
+        public void onSaveCustomInputStyle(CustomInputStylePreference stylePref);
+        public void onAddCustomInputStyle(CustomInputStylePreference stylePref);
+        public SubtypeLocaleAdapter getSubtypeLocaleAdapter();
+        public KeyboardLayoutSetAdapter getKeyboardLayoutSetAdapter();
+    }
+
+    private static final String KEY_PREFIX = "subtype_pref_";
+    private static final String KEY_NEW_SUBTYPE = KEY_PREFIX + "new";
+
+    private InputMethodSubtype mSubtype;
+    private InputMethodSubtype mPreviousSubtype;
+
+    private final Listener mProxy;
+    private Spinner mSubtypeLocaleSpinner;
+    private Spinner mKeyboardLayoutSetSpinner;
+
+    public static CustomInputStylePreference newIncompleteSubtypePreference(
+            final Context context, final Listener proxy) {
+        return new CustomInputStylePreference(context, null, proxy);
+    }
+
+    public CustomInputStylePreference(final Context context, final InputMethodSubtype subtype,
+            final Listener proxy) {
+        super(context, null);
+        setDialogLayoutResource(R.layout.additional_subtype_dialog);
+        setPersistent(false);
+        mProxy = proxy;
+        setSubtype(subtype);
+    }
+
+    public void show() {
+        showDialog(null);
+    }
+
+    public final boolean isIncomplete() {
+        return mSubtype == null;
+    }
+
+    public InputMethodSubtype getSubtype() {
+        return mSubtype;
+    }
+
+    public void setSubtype(final InputMethodSubtype subtype) {
+        mPreviousSubtype = mSubtype;
+        mSubtype = subtype;
+        if (isIncomplete()) {
+            setTitle(null);
+            setDialogTitle(R.string.add_style);
+            setKey(KEY_NEW_SUBTYPE);
+        } else {
+            final String displayName =
+                    SubtypeLocaleUtils.getSubtypeDisplayNameInSystemLocale(subtype);
+            setTitle(displayName);
+            setDialogTitle(displayName);
+            setKey(KEY_PREFIX + subtype.getLocale() + "_"
+                    + SubtypeLocaleUtils.getKeyboardLayoutSetName(subtype));
+        }
+    }
+
+    public void revert() {
+        setSubtype(mPreviousSubtype);
+    }
+
+    public boolean hasBeenModified() {
+        return mSubtype != null && !mSubtype.equals(mPreviousSubtype);
+    }
+
+    @Override
+    protected View onCreateDialogView() {
+        final View v = super.onCreateDialogView();
+        mSubtypeLocaleSpinner = (Spinner) v.findViewById(R.id.subtype_locale_spinner);
+        mSubtypeLocaleSpinner.setAdapter(mProxy.getSubtypeLocaleAdapter());
+        mKeyboardLayoutSetSpinner = (Spinner) v.findViewById(R.id.keyboard_layout_set_spinner);
+        mKeyboardLayoutSetSpinner.setAdapter(mProxy.getKeyboardLayoutSetAdapter());
+        // All keyboard layout names are in the Latin script and thus left to right. That means
+        // the view would align them to the left even if the system locale is RTL, but that
+        // would look strange. To fix this, we align them to the view's start, which will be
+        // natural for any direction.
+        ViewCompatUtils.setTextAlignment(
+                mKeyboardLayoutSetSpinner, ViewCompatUtils.TEXT_ALIGNMENT_VIEW_START);
+        return v;
+    }
+
+    @Override
+    protected void onPrepareDialogBuilder(final AlertDialog.Builder builder) {
+        builder.setCancelable(true).setOnCancelListener(this);
+        if (isIncomplete()) {
+            builder.setPositiveButton(R.string.add, this)
+                    .setNegativeButton(android.R.string.cancel, this);
+        } else {
+            builder.setPositiveButton(R.string.save, this)
+                    .setNeutralButton(android.R.string.cancel, this)
+                    .setNegativeButton(R.string.remove, this);
+            final SubtypeLocaleItem localeItem = new SubtypeLocaleItem(mSubtype);
+            final KeyboardLayoutSetItem layoutItem = new KeyboardLayoutSetItem(mSubtype);
+            setSpinnerPosition(mSubtypeLocaleSpinner, localeItem);
+            setSpinnerPosition(mKeyboardLayoutSetSpinner, layoutItem);
+        }
+    }
+
+    private static void setSpinnerPosition(final Spinner spinner, final Object itemToSelect) {
+        final SpinnerAdapter adapter = spinner.getAdapter();
+        final int count = adapter.getCount();
+        for (int i = 0; i < count; i++) {
+            final Object item = spinner.getItemAtPosition(i);
+            if (item.equals(itemToSelect)) {
+                spinner.setSelection(i);
+                return;
+            }
+        }
+    }
+
+    @Override
+    public void onCancel(final DialogInterface dialog) {
+        if (isIncomplete()) {
+            mProxy.onRemoveCustomInputStyle(this);
+        }
+    }
+
+    @Override
+    public void onClick(final DialogInterface dialog, final int which) {
+        super.onClick(dialog, which);
+        switch (which) {
+        case DialogInterface.BUTTON_POSITIVE:
+            final boolean isEditing = !isIncomplete();
+            final SubtypeLocaleItem locale =
+                    (SubtypeLocaleItem) mSubtypeLocaleSpinner.getSelectedItem();
+            final KeyboardLayoutSetItem layout =
+                    (KeyboardLayoutSetItem) mKeyboardLayoutSetSpinner.getSelectedItem();
+            final InputMethodSubtype subtype =
+                    AdditionalSubtypeUtils.createAsciiEmojiCapableAdditionalSubtype(
+                            locale.mLocaleString, layout.mLayoutName);
+            setSubtype(subtype);
+            notifyChanged();
+            if (isEditing) {
+                mProxy.onSaveCustomInputStyle(this);
+            } else {
+                mProxy.onAddCustomInputStyle(this);
+            }
+            break;
+        case DialogInterface.BUTTON_NEUTRAL:
+            // Nothing to do
+            break;
+        case DialogInterface.BUTTON_NEGATIVE:
+            mProxy.onRemoveCustomInputStyle(this);
+            break;
+        }
+    }
+
+    @Override
+    protected Parcelable onSaveInstanceState() {
+        final Parcelable superState = super.onSaveInstanceState();
+        final Dialog dialog = getDialog();
+        if (dialog == null || !dialog.isShowing()) {
+            return superState;
+        }
+
+        final SavedState myState = new SavedState(superState);
+        myState.mSubtype = mSubtype;
+        return myState;
+    }
+
+    @Override
+    protected void onRestoreInstanceState(final Parcelable state) {
+        if (!(state instanceof SavedState)) {
+            super.onRestoreInstanceState(state);
+            return;
+        }
+
+        final SavedState myState = (SavedState) state;
+        super.onRestoreInstanceState(myState.getSuperState());
+        setSubtype(myState.mSubtype);
+    }
+
+    static final class SavedState extends Preference.BaseSavedState {
+        InputMethodSubtype mSubtype;
+
+        public SavedState(final Parcelable superState) {
+            super(superState);
+        }
+
+        @Override
+        public void writeToParcel(final Parcel dest, final int flags) {
+            super.writeToParcel(dest, flags);
+            dest.writeParcelable(mSubtype, 0);
+        }
+
+        public SavedState(final Parcel source) {
+            super(source);
+            mSubtype = (InputMethodSubtype)source.readParcelable(null);
+        }
+
+        @SuppressWarnings("hiding")
+        public static final Parcelable.Creator<SavedState> CREATOR =
+                new Parcelable.Creator<SavedState>() {
+                    @Override
+                    public SavedState createFromParcel(final Parcel source) {
+                        return new SavedState(source);
+                    }
+
+                    @Override
+                    public SavedState[] newArray(final int size) {
+                        return new SavedState[size];
+                    }
+                };
+    }
+
+    static final class SubtypeLocaleItem implements Comparable<SubtypeLocaleItem> {
+        public final String mLocaleString;
+        private final String mDisplayName;
+
+        public SubtypeLocaleItem(final InputMethodSubtype subtype) {
+            mLocaleString = subtype.getLocale();
+            mDisplayName = SubtypeLocaleUtils.getSubtypeLocaleDisplayNameInSystemLocale(
+                    mLocaleString);
+        }
+
+        // {@link ArrayAdapter<T>} that hosts the instance of this class needs {@link #toString()}
+        // to get display name.
+        @Override
+        public String toString() {
+            return mDisplayName;
+        }
+
+        @Override
+        public int compareTo(final SubtypeLocaleItem o) {
+            return mLocaleString.compareTo(o.mLocaleString);
+        }
+    }
+
+    static final class SubtypeLocaleAdapter extends ArrayAdapter<SubtypeLocaleItem> {
+        private static final String TAG_SUBTYPE = SubtypeLocaleAdapter.class.getSimpleName();
+
+        public SubtypeLocaleAdapter(final Context context) {
+            super(context, android.R.layout.simple_spinner_item);
+            setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+
+            final TreeSet<SubtypeLocaleItem> items = new TreeSet<>();
+            final InputMethodInfo imi = RichInputMethodManager.getInstance()
+                    .getInputMethodInfoOfThisIme();
+            final int count = imi.getSubtypeCount();
+            for (int i = 0; i < count; i++) {
+                final InputMethodSubtype subtype = imi.getSubtypeAt(i);
+                if (DEBUG_SUBTYPE_ID) {
+                    Log.d(TAG_SUBTYPE, String.format("%-6s 0x%08x %11d %s",
+                            subtype.getLocale(), subtype.hashCode(), subtype.hashCode(),
+                            SubtypeLocaleUtils.getSubtypeDisplayNameInSystemLocale(subtype)));
+                }
+                if (InputMethodSubtypeCompatUtils.isAsciiCapable(subtype)) {
+                    items.add(new SubtypeLocaleItem(subtype));
+                }
+            }
+            // TODO: Should filter out already existing combinations of locale and layout.
+            addAll(items);
+        }
+    }
+
+    static final class KeyboardLayoutSetItem {
+        public final String mLayoutName;
+        private final String mDisplayName;
+
+        public KeyboardLayoutSetItem(final InputMethodSubtype subtype) {
+            mLayoutName = SubtypeLocaleUtils.getKeyboardLayoutSetName(subtype);
+            mDisplayName = SubtypeLocaleUtils.getKeyboardLayoutSetDisplayName(subtype);
+        }
+
+        // {@link ArrayAdapter<T>} that hosts the instance of this class needs {@link #toString()}
+        // to get display name.
+        @Override
+        public String toString() {
+            return mDisplayName;
+        }
+    }
+
+    static final class KeyboardLayoutSetAdapter extends ArrayAdapter<KeyboardLayoutSetItem> {
+        public KeyboardLayoutSetAdapter(final Context context) {
+            super(context, android.R.layout.simple_spinner_item);
+            setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+
+            final String[] predefinedKeyboardLayoutSet = context.getResources().getStringArray(
+                    R.array.predefined_layouts);
+            // TODO: Should filter out already existing combinations of locale and layout.
+            for (final String layout : predefinedKeyboardLayoutSet) {
+                // This is a placeholder for a subtype with NO_LANGUAGE, only for display.
+                final InputMethodSubtype subtype =
+                        AdditionalSubtypeUtils.createDummyAdditionalSubtype(
+                                SubtypeLocaleUtils.NO_LANGUAGE, layout);
+                add(new KeyboardLayoutSetItem(subtype));
+            }
+        }
+    }
+}