src/com/android/settings/inputmethod/InputMethodPreference.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2011 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.settings.inputmethod;

 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;

 import android.app.AlertDialog;
 import android.app.Fragment;
 import android.content.ActivityNotFoundException;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.PreferenceActivity;
 import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnLongClickListener;
 import android.view.inputmethod.InputMethodInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.view.inputmethod.InputMethodSubtype;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;

 import java.util.Comparator;
 import java.util.List;

 public class InputMethodPreference extends CheckBoxPreference
         implements Comparator<InputMethodPreference> {
     private static final String TAG = InputMethodPreference.class.getSimpleName();
     private static final float DISABLED_ALPHA = 0.4f;
     private final SettingsPreferenceFragment mFragment;
     private final InputMethodInfo mImi;
     private final InputMethodManager mImm;
     private final Intent mSettingsIntent;
     private final boolean mAlwaysChecked;
     private final boolean mIsSystemIme;

     private AlertDialog mDialog = null;
     private ImageView mInputMethodSettingsButton;
     private TextView mTitleText;
     private TextView mSummaryText;
     private View mInputMethodPref;

     private final OnClickListener mPrefOnclickListener = new OnClickListener() {
         @Override
         public void onClick(View arg0) {
             if (!isEnabled()) {
                 return;
             }
             if (isChecked()) {
                 setChecked(false, true /* save */);
             } else {
                 if (mIsSystemIme) {
                     setChecked(true, true /* save */);
                 } else {
                     showSecurityWarnDialog(mImi, InputMethodPreference.this);
                 }
             }
         }
     };

     public InputMethodPreference(SettingsPreferenceFragment fragment, Intent settingsIntent,
             InputMethodManager imm, InputMethodInfo imi, int imiCount) {
         super(fragment.getActivity(), null, R.style.InputMethodPreferenceStyle);
         setLayoutResource(R.layout.preference_inputmethod);
         setWidgetLayoutResource(R.layout.preference_inputmethod_widget);
         mFragment = fragment;
         mSettingsIntent = settingsIntent;
         mImm = imm;
         mImi = imi;
         updateSummary();
         mAlwaysChecked = InputMethodAndSubtypeUtil.isAlwaysCheckedIme(
                 imi, fragment.getActivity(), imiCount);
         mIsSystemIme = InputMethodAndSubtypeUtil.isSystemIme(imi);
         if (mAlwaysChecked) {
             setEnabled(false);
         }
     }

     @Override
     protected void onBindView(View view) {
         super.onBindView(view);
         mInputMethodPref = view.findViewById(R.id.inputmethod_pref);
         mInputMethodPref.setOnClickListener(mPrefOnclickListener);
         mInputMethodSettingsButton = (ImageView)view.findViewById(R.id.inputmethod_settings);
         mTitleText = (TextView)view.findViewById(android.R.id.title);
         mSummaryText = (TextView)view.findViewById(android.R.id.summary);
         final boolean hasSubtypes = mImi.getSubtypeCount() > 1;
         final String imiId = mImi.getId();
         if (hasSubtypes) {
             mInputMethodPref.setOnLongClickListener(new OnLongClickListener() {
                 @Override
                 public boolean onLongClick(View arg0) {
                     final Bundle bundle = new Bundle();
                     bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
                     startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
                             0, bundle);
                     return true;
                 }
             });
         }

         if (mSettingsIntent != null) {
             mInputMethodSettingsButton.setOnClickListener(
                     new OnClickListener() {
                         @Override
                         public void onClick(View arg0) {
                             try {
                                 mFragment.startActivity(mSettingsIntent);
                             } catch (ActivityNotFoundException e) {
                                 Log.d(TAG, "IME's Settings Activity Not Found: " + e);
                                 final String msg = mFragment.getString(
                                         R.string.failed_to_open_app_settings_toast,
                                         mImi.loadLabel(
                                                 mFragment.getActivity().getPackageManager()));
                                 Toast.makeText(
                                         mFragment.getActivity(), msg, Toast.LENGTH_LONG).show();
                             }
                         }
                     });
         }
         if (hasSubtypes) {
             final OnLongClickListener listener = new OnLongClickListener() {
                 @Override
                 public boolean onLongClick(View arg0) {
                     final Bundle bundle = new Bundle();
                     bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
                     startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
                             0, bundle);
                     return true;
                 }
             };
             mInputMethodSettingsButton.setOnLongClickListener(listener);
         }
         if (mSettingsIntent == null) {
             mInputMethodSettingsButton.setVisibility(View.GONE);
         } else {
             updatePreferenceViews();
         }
     }

     @Override
     public void setEnabled(boolean enabled) {
         super.setEnabled(enabled);
         updatePreferenceViews();
     }

     private void updatePreferenceViews() {
         final boolean checked = isChecked();
         if (mInputMethodSettingsButton != null) {
             mInputMethodSettingsButton.setEnabled(checked);
             mInputMethodSettingsButton.setClickable(checked);
             mInputMethodSettingsButton.setFocusable(checked);
             if (!checked) {
                 mInputMethodSettingsButton.setAlpha(DISABLED_ALPHA);
             }
         }
         if (mTitleText != null) {
             mTitleText.setEnabled(true);
         }
         if (mSummaryText != null) {
             mSummaryText.setEnabled(checked);
         }
         if (mInputMethodPref != null) {
             mInputMethodPref.setEnabled(true);
             mInputMethodPref.setLongClickable(checked);
             final boolean enabled = isEnabled();
             mInputMethodPref.setOnClickListener(enabled ? mPrefOnclickListener : null);
             if (!enabled) {
                 mInputMethodPref.setBackgroundColor(0);
             }
         }
     }

     public static boolean startFragment(
             Fragment fragment, String fragmentClass, int requestCode, Bundle extras) {
         if (fragment.getActivity() instanceof PreferenceActivity) {
             PreferenceActivity preferenceActivity = (PreferenceActivity)fragment.getActivity();
             preferenceActivity.startPreferencePanel(fragmentClass, extras, 0, null, fragment,
                     requestCode);
             return true;
         } else {
             Log.w(TAG, "Parent isn't PreferenceActivity, thus there's no way to launch the "
                     + "given Fragment (name: " + fragmentClass + ", requestCode: " + requestCode
                     + ")");
             return false;
         }
     }

     public String getSummaryString() {
         final StringBuilder builder = new StringBuilder();
         final List<InputMethodSubtype> subtypes = mImm.getEnabledInputMethodSubtypeList(mImi, true);
         for (InputMethodSubtype subtype : subtypes) {
             if (builder.length() > 0) {
                 builder.append(", ");
             }
             final CharSequence subtypeLabel = subtype.getDisplayName(mFragment.getActivity(),
                     mImi.getPackageName(), mImi.getServiceInfo().applicationInfo);
             builder.append(subtypeLabel);
         }
         return builder.toString();
     }

     public void updateSummary() {
         final String summary = getSummaryString();
         if (TextUtils.isEmpty(summary)) {
             return;
         }
         setSummary(summary);
     }

     /**
      * Sets the checkbox state and optionally saves the settings.
      * @param checked whether to check the box
      * @param save whether to save IME settings
      */
     public void setChecked(boolean checked, boolean save) {
         super.setChecked(checked);
         if (save) {
             saveImeSettings();
         }
         updateSummary();
     }

     @Override
     public void setChecked(boolean checked) {
         setChecked(checked, false);
     }

     private void showSecurityWarnDialog(InputMethodInfo imi, final InputMethodPreference chkPref) {
         if (mDialog != null && mDialog.isShowing()) {
             mDialog.dismiss();
         }
         mDialog = (new AlertDialog.Builder(mFragment.getActivity()))
                 .setTitle(android.R.string.dialog_alert_title)
                 .setIconAttribute(android.R.attr.alertDialogIcon)
                 .setCancelable(true)
                 .setPositiveButton(android.R.string.ok,
                         new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                         chkPref.setChecked(true, true);
                     }
                 })
                 .setNegativeButton(android.R.string.cancel,
                         new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
                     }
                 })
                 .create();
         mDialog.setMessage(mFragment.getResources().getString(R.string.ime_security_warning,
                 imi.getServiceInfo().applicationInfo.loadLabel(
                         mFragment.getActivity().getPackageManager())));
         mDialog.show();
     }

     @Override
     public int compare(InputMethodPreference arg0, InputMethodPreference arg1) {
         if (arg0.isEnabled() == arg0.isEnabled()) {
             return arg0.mImi.getId().compareTo(arg1.mImi.getId());
         } else {
             // Prefer system IMEs
             return arg0.isEnabled() ? 1 : -1;
         }
     }

     private void saveImeSettings() {
         InputMethodAndSubtypeUtil.saveInputMethodSubtypeList(
                 mFragment, mFragment.getActivity().getContentResolver(), mImm.getInputMethodList(),
                 mFragment.getResources().getConfiguration().keyboard
                         == Configuration.KEYBOARD_QWERTY);
     }
 }
	/*
	* Copyright (C) 2011 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.settings.inputmethod;

	import com.android.settings.R;
	import com.android.settings.SettingsPreferenceFragment;

	import android.app.AlertDialog;
	import android.app.Fragment;
	import android.content.ActivityNotFoundException;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.content.res.Configuration;
	import android.os.Bundle;
	import android.preference.CheckBoxPreference;
	import android.preference.PreferenceActivity;
	import android.provider.Settings;
	import android.text.TextUtils;
	import android.util.Log;
	import android.view.View;
	import android.view.View.OnClickListener;
	import android.view.View.OnLongClickListener;
	import android.view.inputmethod.InputMethodInfo;
	import android.view.inputmethod.InputMethodManager;
	import android.view.inputmethod.InputMethodSubtype;
	import android.widget.ImageView;
	import android.widget.TextView;
	import android.widget.Toast;

	import java.util.Comparator;
	import java.util.List;

	public class InputMethodPreference extends CheckBoxPreference
	implements Comparator<InputMethodPreference> {
	private static final String TAG = InputMethodPreference.class.getSimpleName();
	private static final float DISABLED_ALPHA = 0.4f;
	private final SettingsPreferenceFragment mFragment;
	private final InputMethodInfo mImi;
	private final InputMethodManager mImm;
	private final Intent mSettingsIntent;
	private final boolean mAlwaysChecked;
	private final boolean mIsSystemIme;

	private AlertDialog mDialog = null;
	private ImageView mInputMethodSettingsButton;
	private TextView mTitleText;
	private TextView mSummaryText;
	private View mInputMethodPref;

	private final OnClickListener mPrefOnclickListener = new OnClickListener() {
	@Override
	public void onClick(View arg0) {
	if (!isEnabled()) {
	return;
	}
	if (isChecked()) {
	setChecked(false, true /* save */);
	} else {
	if (mIsSystemIme) {
	setChecked(true, true /* save */);
	} else {
	showSecurityWarnDialog(mImi, InputMethodPreference.this);
	}
	}
	}
	};

	public InputMethodPreference(SettingsPreferenceFragment fragment, Intent settingsIntent,
	InputMethodManager imm, InputMethodInfo imi, int imiCount) {
	super(fragment.getActivity(), null, R.style.InputMethodPreferenceStyle);
	setLayoutResource(R.layout.preference_inputmethod);
	setWidgetLayoutResource(R.layout.preference_inputmethod_widget);
	mFragment = fragment;
	mSettingsIntent = settingsIntent;
	mImm = imm;
	mImi = imi;
	updateSummary();
	mAlwaysChecked = InputMethodAndSubtypeUtil.isAlwaysCheckedIme(
	imi, fragment.getActivity(), imiCount);
	mIsSystemIme = InputMethodAndSubtypeUtil.isSystemIme(imi);
	if (mAlwaysChecked) {
	setEnabled(false);
	}
	}

	@Override
	protected void onBindView(View view) {
	super.onBindView(view);
	mInputMethodPref = view.findViewById(R.id.inputmethod_pref);
	mInputMethodPref.setOnClickListener(mPrefOnclickListener);
	mInputMethodSettingsButton = (ImageView)view.findViewById(R.id.inputmethod_settings);
	mTitleText = (TextView)view.findViewById(android.R.id.title);
	mSummaryText = (TextView)view.findViewById(android.R.id.summary);
	final boolean hasSubtypes = mImi.getSubtypeCount() > 1;
	final String imiId = mImi.getId();
	if (hasSubtypes) {
	mInputMethodPref.setOnLongClickListener(new OnLongClickListener() {
	@Override
	public boolean onLongClick(View arg0) {
	final Bundle bundle = new Bundle();
	bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
	startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
	0, bundle);
	return true;
	}
	});
	}

	if (mSettingsIntent != null) {
	mInputMethodSettingsButton.setOnClickListener(
	new OnClickListener() {
	@Override
	public void onClick(View arg0) {
	try {
	mFragment.startActivity(mSettingsIntent);
	} catch (ActivityNotFoundException e) {
	Log.d(TAG, "IME's Settings Activity Not Found: " + e);
	final String msg = mFragment.getString(
	R.string.failed_to_open_app_settings_toast,
	mImi.loadLabel(
	mFragment.getActivity().getPackageManager()));
	Toast.makeText(
	mFragment.getActivity(), msg, Toast.LENGTH_LONG).show();
	}
	}
	});
	}
	if (hasSubtypes) {
	final OnLongClickListener listener = new OnLongClickListener() {
	@Override
	public boolean onLongClick(View arg0) {
	final Bundle bundle = new Bundle();
	bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
	startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
	0, bundle);
	return true;
	}
	};
	mInputMethodSettingsButton.setOnLongClickListener(listener);
	}
	if (mSettingsIntent == null) {
	mInputMethodSettingsButton.setVisibility(View.GONE);
	} else {
	updatePreferenceViews();
	}
	}

	@Override
	public void setEnabled(boolean enabled) {
	super.setEnabled(enabled);
	updatePreferenceViews();
	}

	private void updatePreferenceViews() {
	final boolean checked = isChecked();
	if (mInputMethodSettingsButton != null) {
	mInputMethodSettingsButton.setEnabled(checked);
	mInputMethodSettingsButton.setClickable(checked);
	mInputMethodSettingsButton.setFocusable(checked);
	if (!checked) {
	mInputMethodSettingsButton.setAlpha(DISABLED_ALPHA);
	}
	}
	if (mTitleText != null) {
	mTitleText.setEnabled(true);
	}
	if (mSummaryText != null) {
	mSummaryText.setEnabled(checked);
	}
	if (mInputMethodPref != null) {
	mInputMethodPref.setEnabled(true);
	mInputMethodPref.setLongClickable(checked);
	final boolean enabled = isEnabled();
	mInputMethodPref.setOnClickListener(enabled ? mPrefOnclickListener : null);
	if (!enabled) {
	mInputMethodPref.setBackgroundColor(0);
	}
	}
	}

	public static boolean startFragment(
	Fragment fragment, String fragmentClass, int requestCode, Bundle extras) {
	if (fragment.getActivity() instanceof PreferenceActivity) {
	PreferenceActivity preferenceActivity = (PreferenceActivity)fragment.getActivity();
	preferenceActivity.startPreferencePanel(fragmentClass, extras, 0, null, fragment,
	requestCode);
	return true;
	} else {
	Log.w(TAG, "Parent isn't PreferenceActivity, thus there's no way to launch the "
	+ "given Fragment (name: " + fragmentClass + ", requestCode: " + requestCode
	+ ")");
	return false;
	}
	}

	public String getSummaryString() {
	final StringBuilder builder = new StringBuilder();
	final List<InputMethodSubtype> subtypes = mImm.getEnabledInputMethodSubtypeList(mImi, true);
	for (InputMethodSubtype subtype : subtypes) {
	if (builder.length() > 0) {
	builder.append(", ");
	}
	final CharSequence subtypeLabel = subtype.getDisplayName(mFragment.getActivity(),
	mImi.getPackageName(), mImi.getServiceInfo().applicationInfo);
	builder.append(subtypeLabel);
	}
	return builder.toString();
	}

	public void updateSummary() {
	final String summary = getSummaryString();
	if (TextUtils.isEmpty(summary)) {
	return;
	}
	setSummary(summary);
	}

	/**
	* Sets the checkbox state and optionally saves the settings.
	* @param checked whether to check the box
	* @param save whether to save IME settings
	*/
	public void setChecked(boolean checked, boolean save) {
	super.setChecked(checked);
	if (save) {
	saveImeSettings();
	}
	updateSummary();
	}

	@Override
	public void setChecked(boolean checked) {
	setChecked(checked, false);
	}

	private void showSecurityWarnDialog(InputMethodInfo imi, final InputMethodPreference chkPref) {
	if (mDialog != null && mDialog.isShowing()) {
	mDialog.dismiss();
	}
	mDialog = (new AlertDialog.Builder(mFragment.getActivity()))
	.setTitle(android.R.string.dialog_alert_title)
	.setIconAttribute(android.R.attr.alertDialogIcon)
	.setCancelable(true)
	.setPositiveButton(android.R.string.ok,
	new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	chkPref.setChecked(true, true);
	}
	})
	.setNegativeButton(android.R.string.cancel,
	new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	}
	})
	.create();
	mDialog.setMessage(mFragment.getResources().getString(R.string.ime_security_warning,
	imi.getServiceInfo().applicationInfo.loadLabel(
	mFragment.getActivity().getPackageManager())));
	mDialog.show();
	}

	@Override
	public int compare(InputMethodPreference arg0, InputMethodPreference arg1) {
	if (arg0.isEnabled() == arg0.isEnabled()) {
	return arg0.mImi.getId().compareTo(arg1.mImi.getId());
	} else {
	// Prefer system IMEs
	return arg0.isEnabled() ? 1 : -1;
	}
	}

	private void saveImeSettings() {
	InputMethodAndSubtypeUtil.saveInputMethodSubtypeList(
	mFragment, mFragment.getActivity().getContentResolver(), mImm.getInputMethodList(),
	mFragment.getResources().getConfiguration().keyboard
	== Configuration.KEYBOARD_QWERTY);
	}
	}