342 lines
13 KiB
Java
342 lines
13 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin.settings;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.preference.DialogPreference;
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import android.preference.Preference;
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import android.util.Log;
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import android.view.View;
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import android.view.inputmethod.InputMethodInfo;
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import android.view.inputmethod.InputMethodSubtype;
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import android.widget.ArrayAdapter;
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import android.widget.Spinner;
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import android.widget.SpinnerAdapter;
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import com.android.inputmethod.compat.InputMethodSubtypeCompatUtils;
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import com.android.inputmethod.compat.ViewCompatUtils;
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import com.android.inputmethod.latin.R;
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import com.android.inputmethod.latin.RichInputMethodManager;
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import com.android.inputmethod.latin.utils.AdditionalSubtypeUtils;
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import com.android.inputmethod.latin.utils.SubtypeLocaleUtils;
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import java.util.TreeSet;
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final class CustomInputStylePreference extends DialogPreference
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implements DialogInterface.OnCancelListener {
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private static final boolean DEBUG_SUBTYPE_ID = false;
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interface Listener {
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public void onRemoveCustomInputStyle(CustomInputStylePreference stylePref);
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public void onSaveCustomInputStyle(CustomInputStylePreference stylePref);
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public void onAddCustomInputStyle(CustomInputStylePreference stylePref);
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public SubtypeLocaleAdapter getSubtypeLocaleAdapter();
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public KeyboardLayoutSetAdapter getKeyboardLayoutSetAdapter();
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}
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private static final String KEY_PREFIX = "subtype_pref_";
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private static final String KEY_NEW_SUBTYPE = KEY_PREFIX + "new";
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private InputMethodSubtype mSubtype;
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private InputMethodSubtype mPreviousSubtype;
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private final Listener mProxy;
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private Spinner mSubtypeLocaleSpinner;
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private Spinner mKeyboardLayoutSetSpinner;
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public static CustomInputStylePreference newIncompleteSubtypePreference(
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final Context context, final Listener proxy) {
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return new CustomInputStylePreference(context, null, proxy);
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}
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public CustomInputStylePreference(final Context context, final InputMethodSubtype subtype,
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final Listener proxy) {
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super(context, null);
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setDialogLayoutResource(R.layout.additional_subtype_dialog);
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setPersistent(false);
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mProxy = proxy;
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setSubtype(subtype);
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}
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public void show() {
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showDialog(null);
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}
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public final boolean isIncomplete() {
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return mSubtype == null;
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}
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public InputMethodSubtype getSubtype() {
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return mSubtype;
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}
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public void setSubtype(final InputMethodSubtype subtype) {
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mPreviousSubtype = mSubtype;
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mSubtype = subtype;
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if (isIncomplete()) {
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setTitle(null);
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setDialogTitle(R.string.add_style);
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setKey(KEY_NEW_SUBTYPE);
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} else {
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final String displayName =
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SubtypeLocaleUtils.getSubtypeDisplayNameInSystemLocale(subtype);
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setTitle(displayName);
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setDialogTitle(displayName);
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setKey(KEY_PREFIX + subtype.getLocale() + "_"
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+ SubtypeLocaleUtils.getKeyboardLayoutSetName(subtype));
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}
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}
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public void revert() {
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setSubtype(mPreviousSubtype);
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}
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public boolean hasBeenModified() {
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return mSubtype != null && !mSubtype.equals(mPreviousSubtype);
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}
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@Override
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protected View onCreateDialogView() {
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final View v = super.onCreateDialogView();
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mSubtypeLocaleSpinner = (Spinner) v.findViewById(R.id.subtype_locale_spinner);
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mSubtypeLocaleSpinner.setAdapter(mProxy.getSubtypeLocaleAdapter());
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mKeyboardLayoutSetSpinner = (Spinner) v.findViewById(R.id.keyboard_layout_set_spinner);
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mKeyboardLayoutSetSpinner.setAdapter(mProxy.getKeyboardLayoutSetAdapter());
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// All keyboard layout names are in the Latin script and thus left to right. That means
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// the view would align them to the left even if the system locale is RTL, but that
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// would look strange. To fix this, we align them to the view's start, which will be
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// natural for any direction.
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ViewCompatUtils.setTextAlignment(
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mKeyboardLayoutSetSpinner, ViewCompatUtils.TEXT_ALIGNMENT_VIEW_START);
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return v;
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}
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@Override
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protected void onPrepareDialogBuilder(final AlertDialog.Builder builder) {
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builder.setCancelable(true).setOnCancelListener(this);
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if (isIncomplete()) {
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builder.setPositiveButton(R.string.add, this)
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.setNegativeButton(android.R.string.cancel, this);
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} else {
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builder.setPositiveButton(R.string.save, this)
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.setNeutralButton(android.R.string.cancel, this)
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.setNegativeButton(R.string.remove, this);
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final SubtypeLocaleItem localeItem = new SubtypeLocaleItem(mSubtype);
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final KeyboardLayoutSetItem layoutItem = new KeyboardLayoutSetItem(mSubtype);
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setSpinnerPosition(mSubtypeLocaleSpinner, localeItem);
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setSpinnerPosition(mKeyboardLayoutSetSpinner, layoutItem);
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}
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}
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private static void setSpinnerPosition(final Spinner spinner, final Object itemToSelect) {
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final SpinnerAdapter adapter = spinner.getAdapter();
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final int count = adapter.getCount();
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for (int i = 0; i < count; i++) {
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final Object item = spinner.getItemAtPosition(i);
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if (item.equals(itemToSelect)) {
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spinner.setSelection(i);
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return;
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}
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}
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}
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@Override
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public void onCancel(final DialogInterface dialog) {
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if (isIncomplete()) {
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mProxy.onRemoveCustomInputStyle(this);
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}
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}
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@Override
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public void onClick(final DialogInterface dialog, final int which) {
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super.onClick(dialog, which);
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switch (which) {
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case DialogInterface.BUTTON_POSITIVE:
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final boolean isEditing = !isIncomplete();
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final SubtypeLocaleItem locale =
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(SubtypeLocaleItem) mSubtypeLocaleSpinner.getSelectedItem();
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final KeyboardLayoutSetItem layout =
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(KeyboardLayoutSetItem) mKeyboardLayoutSetSpinner.getSelectedItem();
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final InputMethodSubtype subtype =
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AdditionalSubtypeUtils.createAsciiEmojiCapableAdditionalSubtype(
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locale.mLocaleString, layout.mLayoutName);
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setSubtype(subtype);
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notifyChanged();
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if (isEditing) {
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mProxy.onSaveCustomInputStyle(this);
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} else {
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mProxy.onAddCustomInputStyle(this);
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}
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break;
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case DialogInterface.BUTTON_NEUTRAL:
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// Nothing to do
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break;
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case DialogInterface.BUTTON_NEGATIVE:
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mProxy.onRemoveCustomInputStyle(this);
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break;
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}
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}
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@Override
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protected Parcelable onSaveInstanceState() {
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final Parcelable superState = super.onSaveInstanceState();
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final Dialog dialog = getDialog();
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if (dialog == null || !dialog.isShowing()) {
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return superState;
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}
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final SavedState myState = new SavedState(superState);
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myState.mSubtype = mSubtype;
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return myState;
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}
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@Override
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protected void onRestoreInstanceState(final Parcelable state) {
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if (!(state instanceof SavedState)) {
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super.onRestoreInstanceState(state);
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return;
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}
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final SavedState myState = (SavedState) state;
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super.onRestoreInstanceState(myState.getSuperState());
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setSubtype(myState.mSubtype);
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}
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static final class SavedState extends Preference.BaseSavedState {
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InputMethodSubtype mSubtype;
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public SavedState(final Parcelable superState) {
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super(superState);
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}
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@Override
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public void writeToParcel(final Parcel dest, final int flags) {
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super.writeToParcel(dest, flags);
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dest.writeParcelable(mSubtype, 0);
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}
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public SavedState(final Parcel source) {
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super(source);
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mSubtype = (InputMethodSubtype)source.readParcelable(null);
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}
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@SuppressWarnings("hiding")
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public static final Parcelable.Creator<SavedState> CREATOR =
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new Parcelable.Creator<SavedState>() {
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@Override
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public SavedState createFromParcel(final Parcel source) {
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return new SavedState(source);
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}
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@Override
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public SavedState[] newArray(final int size) {
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return new SavedState[size];
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}
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};
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}
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static final class SubtypeLocaleItem implements Comparable<SubtypeLocaleItem> {
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public final String mLocaleString;
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private final String mDisplayName;
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public SubtypeLocaleItem(final InputMethodSubtype subtype) {
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mLocaleString = subtype.getLocale();
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mDisplayName = SubtypeLocaleUtils.getSubtypeLocaleDisplayNameInSystemLocale(
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mLocaleString);
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}
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// {@link ArrayAdapter<T>} that hosts the instance of this class needs {@link #toString()}
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// to get display name.
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@Override
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public String toString() {
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return mDisplayName;
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}
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@Override
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public int compareTo(final SubtypeLocaleItem o) {
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return mLocaleString.compareTo(o.mLocaleString);
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}
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}
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static final class SubtypeLocaleAdapter extends ArrayAdapter<SubtypeLocaleItem> {
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private static final String TAG_SUBTYPE = SubtypeLocaleAdapter.class.getSimpleName();
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public SubtypeLocaleAdapter(final Context context) {
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super(context, android.R.layout.simple_spinner_item);
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setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
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final TreeSet<SubtypeLocaleItem> items = new TreeSet<>();
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final InputMethodInfo imi = RichInputMethodManager.getInstance()
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.getInputMethodInfoOfThisIme();
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final int count = imi.getSubtypeCount();
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for (int i = 0; i < count; i++) {
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final InputMethodSubtype subtype = imi.getSubtypeAt(i);
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if (DEBUG_SUBTYPE_ID) {
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Log.d(TAG_SUBTYPE, String.format("%-6s 0x%08x %11d %s",
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subtype.getLocale(), subtype.hashCode(), subtype.hashCode(),
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SubtypeLocaleUtils.getSubtypeDisplayNameInSystemLocale(subtype)));
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}
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if (InputMethodSubtypeCompatUtils.isAsciiCapable(subtype)) {
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items.add(new SubtypeLocaleItem(subtype));
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}
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}
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// TODO: Should filter out already existing combinations of locale and layout.
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addAll(items);
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}
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}
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static final class KeyboardLayoutSetItem {
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public final String mLayoutName;
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private final String mDisplayName;
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public KeyboardLayoutSetItem(final InputMethodSubtype subtype) {
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mLayoutName = SubtypeLocaleUtils.getKeyboardLayoutSetName(subtype);
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mDisplayName = SubtypeLocaleUtils.getKeyboardLayoutSetDisplayName(subtype);
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}
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// {@link ArrayAdapter<T>} that hosts the instance of this class needs {@link #toString()}
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// to get display name.
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@Override
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public String toString() {
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return mDisplayName;
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}
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}
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static final class KeyboardLayoutSetAdapter extends ArrayAdapter<KeyboardLayoutSetItem> {
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public KeyboardLayoutSetAdapter(final Context context) {
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super(context, android.R.layout.simple_spinner_item);
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setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
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final String[] predefinedKeyboardLayoutSet = context.getResources().getStringArray(
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R.array.predefined_layouts);
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// TODO: Should filter out already existing combinations of locale and layout.
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for (final String layout : predefinedKeyboardLayoutSet) {
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// This is a placeholder for a subtype with NO_LANGUAGE, only for display.
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final InputMethodSubtype subtype =
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AdditionalSubtypeUtils.createDummyAdditionalSubtype(
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SubtypeLocaleUtils.NO_LANGUAGE, layout);
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add(new KeyboardLayoutSetItem(subtype));
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}
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}
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}
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}
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