src/com/android/settings/inputmethod/ModifierKeysPickerDialogFragment.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2022 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 static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG;

 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.Context;
 import android.hardware.input.InputManager;
 import android.os.Bundle;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.ForegroundColorSpan;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;

 import androidx.fragment.app.DialogFragment;
 import androidx.preference.Preference;

 import com.android.settings.R;
 import com.android.settingslib.Utils;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 public class ModifierKeysPickerDialogFragment extends DialogFragment {

     static final String DEFAULT_KEY = "default_key";
     static final String SELECTION_KEY = "delection_key";

     private Preference mPreference;
     private String mKeyDefaultName;
     private String mKeyFocus;
     private Activity mActivity;

     private List<int[]> mRemappableKeyList =
             new ArrayList<>(Arrays.asList(
                     new int[]{KeyEvent.KEYCODE_CAPS_LOCK},
                     new int[]{KeyEvent.KEYCODE_CTRL_LEFT, KeyEvent.KEYCODE_CTRL_RIGHT},
                     new int[]{KeyEvent.KEYCODE_META_LEFT, KeyEvent.KEYCODE_META_RIGHT},
                     new int[]{KeyEvent.KEYCODE_ALT_LEFT, KeyEvent.KEYCODE_ALT_RIGHT}));

     private Map<String, int[]> mRemappableKeyMap = new HashMap<>();

     public ModifierKeysPickerDialogFragment() {}

     @Override
     public void onSaveInstanceState(Bundle savedInstanceState) {
         savedInstanceState.putString(SELECTION_KEY, mKeyFocus);
         super.onSaveInstanceState(savedInstanceState);
     }

     @Override
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         super.onCreateDialog(savedInstanceState);

         mActivity = getActivity();
         InputManager inputManager = mActivity.getSystemService(InputManager.class);
         mKeyDefaultName = getArguments().getString(DEFAULT_KEY);
         mKeyFocus = getArguments().getString(SELECTION_KEY);
         if (savedInstanceState != null) {
             mKeyFocus = savedInstanceState.getString(SELECTION_KEY);
         }
         List<String> modifierKeys = new ArrayList<String>(Arrays.asList(
                 mActivity.getString(R.string.modifier_keys_caps_lock),
                 mActivity.getString(R.string.modifier_keys_ctrl),
                 mActivity.getString(R.string.modifier_keys_meta),
                 mActivity.getString(R.string.modifier_keys_alt)));
         for (int i = 0; i < modifierKeys.size(); i++) {
             mRemappableKeyMap.put(modifierKeys.get(i), mRemappableKeyList.get(i));
         }

         View dialoglayout  =
                 LayoutInflater.from(mActivity).inflate(R.layout.modifier_key_picker_dialog, null);
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(mActivity);
         dialogBuilder.setView(dialoglayout);

         TextView summary = dialoglayout.findViewById(R.id.modifier_key_picker_summary);
         CharSequence summaryText = mActivity.getString(
                 R.string.modifier_keys_picker_summary, mKeyDefaultName);
         summary.setText(summaryText);

         ModifierKeyAdapter adapter = new ModifierKeyAdapter(modifierKeys);
         ListView listView = dialoglayout.findViewById(R.id.modifier_key_picker);
         listView.setAdapter(adapter);
         setInitialFocusItem(modifierKeys, adapter);
         listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
             @Override
             public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                 adapter.setCurrentItem(i);
                 adapter.notifyDataSetChanged();
             }
         });

         AlertDialog modifierKeyDialog = dialogBuilder.create();
         Button doneButton = dialoglayout.findViewById(R.id.modifier_key_done_button);
         doneButton.setOnClickListener(v -> {
             String selectedItem = modifierKeys.get(adapter.getCurrentItem());
             Spannable itemSummary;
             if (selectedItem.equals(mKeyDefaultName)) {
                 itemSummary = new SpannableString(
                         mActivity.getString(R.string.modifier_keys_default_summary));
                 itemSummary.setSpan(
                         new ForegroundColorSpan(getColorOfTextColorSecondary()),
                         0, itemSummary.length(), 0);
                 // Set keys to default.
                 int[] keys = mRemappableKeyMap.get(mKeyDefaultName);
                 for (int i = 0; i < keys.length; i++) {
                     inputManager.remapModifierKey(keys[i], keys[i]);
                 }
             } else {
                 itemSummary = new SpannableString(selectedItem);
                 itemSummary.setSpan(
                         new ForegroundColorSpan(getColorOfMaterialColorPrimary()),
                         0, itemSummary.length(), 0);
                 int[] fromKeys = mRemappableKeyMap.get(mKeyDefaultName);
                 int[] toKeys = mRemappableKeyMap.get(selectedItem);
                 // CAPS_LOCK only one key, so always choose the left key for remapping.
                 if (isKeyCapsLock(mActivity, mKeyDefaultName)) {
                     inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
                 }
                 // Remap KEY_LEFT and KEY_RIGHT to CAPS_LOCK.
                 if (!isKeyCapsLock(mActivity, mKeyDefaultName)
                         && isKeyCapsLock(mActivity, selectedItem)) {
                     inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
                     inputManager.remapModifierKey(fromKeys[1], toKeys[0]);
                 }
                 // Auto handle left and right keys remapping.
                 if (!isKeyCapsLock(mActivity, mKeyDefaultName)
                         && !isKeyCapsLock(mActivity, selectedItem)) {
                     inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
                     inputManager.remapModifierKey(fromKeys[1], toKeys[1]);
                 }
             }
             dismiss();
             mActivity.recreate();
         });

         Button cancelButton = dialoglayout.findViewById(R.id.modifier_key_cancel_button);
         cancelButton.setOnClickListener(v -> {
             dismiss();
         });

         final Window window = modifierKeyDialog.getWindow();
         window.setType(TYPE_SYSTEM_DIALOG);

         return modifierKeyDialog;
     }

     private void setInitialFocusItem(
             List<String> modifierKeys, ModifierKeyAdapter adapter) {
         if (modifierKeys.indexOf(mKeyFocus) == -1) {
             adapter.setCurrentItem(modifierKeys.indexOf(mKeyDefaultName));
         } else {
             adapter.setCurrentItem(modifierKeys.indexOf(mKeyFocus));
         }
         adapter.notifyDataSetChanged();
     }

     private static boolean isKeyCapsLock(Context context, String key) {
         return key.equals(context.getString(R.string.modifier_keys_caps_lock));
     }

     class ModifierKeyAdapter extends BaseAdapter {
         private int mCurrentItem = 0;
         private List<String> mList;

         ModifierKeyAdapter(List<String> list) {
             this.mList = list;
         }

         @Override
         public int getCount() {
             return mList.size();
         }

         @Override
         public Object getItem(int i) {
             return mList.get(i);
         }

         @Override
         public long getItemId(int i) {
             return i;
         }

         @Override
         public View getView(int i, View view, ViewGroup viewGroup) {
             if (view == null) {
                 view = LayoutInflater.from(mActivity).inflate(R.layout.modifier_key_item, null);
             }
             TextView textView = view.findViewById(R.id.modifier_key_text);
             ImageView checkIcon = view.findViewById(R.id.modifier_key_check_icon);
             textView.setText(mList.get(i));
             if (mCurrentItem == i) {
                 mKeyFocus = mList.get(i);
                 textView.setTextColor(getColorOfMaterialColorPrimary());
                 checkIcon.setImageAlpha(255);
                 view.setBackground(
                         mActivity.getDrawable(R.drawable.modifier_key_lisetview_background));
             } else {
                 textView.setTextColor(getColorOfTextColorPrimary());
                 checkIcon.setImageAlpha(0);
                 view.setBackground(null);
             }
             return view;
         }

         public void setCurrentItem(int currentItem) {
             this.mCurrentItem = currentItem;
         }

         public int getCurrentItem() {
             return this.mCurrentItem;
         }
     }

     private int getColorOfTextColorPrimary() {
         return Utils.getColorAttrDefaultColor(mActivity, android.R.attr.textColorPrimary);
     }

     private int getColorOfTextColorSecondary() {
         return Utils.getColorAttrDefaultColor(mActivity, android.R.attr.textColorSecondary);
     }

     private int getColorOfMaterialColorPrimary() {
         return Utils.getColorAttrDefaultColor(
                 mActivity, com.android.internal.R.attr.materialColorPrimary);
     }
 }
	/*
	* Copyright (C) 2022 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 static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG;

	import android.app.Activity;
	import android.app.AlertDialog;
	import android.app.Dialog;
	import android.content.Context;
	import android.hardware.input.InputManager;
	import android.os.Bundle;
	import android.text.Spannable;
	import android.text.SpannableString;
	import android.text.style.ForegroundColorSpan;
	import android.view.KeyEvent;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.Window;
	import android.widget.AdapterView;
	import android.widget.BaseAdapter;
	import android.widget.Button;
	import android.widget.ImageView;
	import android.widget.ListView;
	import android.widget.TextView;

	import androidx.fragment.app.DialogFragment;
	import androidx.preference.Preference;

	import com.android.settings.R;
	import com.android.settingslib.Utils;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	public class ModifierKeysPickerDialogFragment extends DialogFragment {

	static final String DEFAULT_KEY = "default_key";
	static final String SELECTION_KEY = "delection_key";

	private Preference mPreference;
	private String mKeyDefaultName;
	private String mKeyFocus;
	private Activity mActivity;

	private List<int[]> mRemappableKeyList =
	new ArrayList<>(Arrays.asList(
	new int[]{KeyEvent.KEYCODE_CAPS_LOCK},
	new int[]{KeyEvent.KEYCODE_CTRL_LEFT, KeyEvent.KEYCODE_CTRL_RIGHT},
	new int[]{KeyEvent.KEYCODE_META_LEFT, KeyEvent.KEYCODE_META_RIGHT},
	new int[]{KeyEvent.KEYCODE_ALT_LEFT, KeyEvent.KEYCODE_ALT_RIGHT}));

	private Map<String, int[]> mRemappableKeyMap = new HashMap<>();

	public ModifierKeysPickerDialogFragment() {}

	@Override
	public void onSaveInstanceState(Bundle savedInstanceState) {
	savedInstanceState.putString(SELECTION_KEY, mKeyFocus);
	super.onSaveInstanceState(savedInstanceState);
	}

	@Override
	public Dialog onCreateDialog(Bundle savedInstanceState) {
	super.onCreateDialog(savedInstanceState);

	mActivity = getActivity();
	InputManager inputManager = mActivity.getSystemService(InputManager.class);
	mKeyDefaultName = getArguments().getString(DEFAULT_KEY);
	mKeyFocus = getArguments().getString(SELECTION_KEY);
	if (savedInstanceState != null) {
	mKeyFocus = savedInstanceState.getString(SELECTION_KEY);
	}
	List<String> modifierKeys = new ArrayList<String>(Arrays.asList(
	mActivity.getString(R.string.modifier_keys_caps_lock),
	mActivity.getString(R.string.modifier_keys_ctrl),
	mActivity.getString(R.string.modifier_keys_meta),
	mActivity.getString(R.string.modifier_keys_alt)));
	for (int i = 0; i < modifierKeys.size(); i++) {
	mRemappableKeyMap.put(modifierKeys.get(i), mRemappableKeyList.get(i));
	}

	View dialoglayout =
	LayoutInflater.from(mActivity).inflate(R.layout.modifier_key_picker_dialog, null);
	AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(mActivity);
	dialogBuilder.setView(dialoglayout);

	TextView summary = dialoglayout.findViewById(R.id.modifier_key_picker_summary);
	CharSequence summaryText = mActivity.getString(
	R.string.modifier_keys_picker_summary, mKeyDefaultName);
	summary.setText(summaryText);

	ModifierKeyAdapter adapter = new ModifierKeyAdapter(modifierKeys);
	ListView listView = dialoglayout.findViewById(R.id.modifier_key_picker);
	listView.setAdapter(adapter);
	setInitialFocusItem(modifierKeys, adapter);
	listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
	@Override
	public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
	adapter.setCurrentItem(i);
	adapter.notifyDataSetChanged();
	}
	});

	AlertDialog modifierKeyDialog = dialogBuilder.create();
	Button doneButton = dialoglayout.findViewById(R.id.modifier_key_done_button);
	doneButton.setOnClickListener(v -> {
	String selectedItem = modifierKeys.get(adapter.getCurrentItem());
	Spannable itemSummary;
	if (selectedItem.equals(mKeyDefaultName)) {
	itemSummary = new SpannableString(
	mActivity.getString(R.string.modifier_keys_default_summary));
	itemSummary.setSpan(
	new ForegroundColorSpan(getColorOfTextColorSecondary()),
	0, itemSummary.length(), 0);
	// Set keys to default.
	int[] keys = mRemappableKeyMap.get(mKeyDefaultName);
	for (int i = 0; i < keys.length; i++) {
	inputManager.remapModifierKey(keys[i], keys[i]);
	}
	} else {
	itemSummary = new SpannableString(selectedItem);
	itemSummary.setSpan(
	new ForegroundColorSpan(getColorOfMaterialColorPrimary()),
	0, itemSummary.length(), 0);
	int[] fromKeys = mRemappableKeyMap.get(mKeyDefaultName);
	int[] toKeys = mRemappableKeyMap.get(selectedItem);
	// CAPS_LOCK only one key, so always choose the left key for remapping.
	if (isKeyCapsLock(mActivity, mKeyDefaultName)) {
	inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
	}
	// Remap KEY_LEFT and KEY_RIGHT to CAPS_LOCK.
	if (!isKeyCapsLock(mActivity, mKeyDefaultName)
	&& isKeyCapsLock(mActivity, selectedItem)) {
	inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
	inputManager.remapModifierKey(fromKeys[1], toKeys[0]);
	}
	// Auto handle left and right keys remapping.
	if (!isKeyCapsLock(mActivity, mKeyDefaultName)
	&& !isKeyCapsLock(mActivity, selectedItem)) {
	inputManager.remapModifierKey(fromKeys[0], toKeys[0]);
	inputManager.remapModifierKey(fromKeys[1], toKeys[1]);
	}
	}
	dismiss();
	mActivity.recreate();
	});

	Button cancelButton = dialoglayout.findViewById(R.id.modifier_key_cancel_button);
	cancelButton.setOnClickListener(v -> {
	dismiss();
	});

	final Window window = modifierKeyDialog.getWindow();
	window.setType(TYPE_SYSTEM_DIALOG);

	return modifierKeyDialog;
	}

	private void setInitialFocusItem(
	List<String> modifierKeys, ModifierKeyAdapter adapter) {
	if (modifierKeys.indexOf(mKeyFocus) == -1) {
	adapter.setCurrentItem(modifierKeys.indexOf(mKeyDefaultName));
	} else {
	adapter.setCurrentItem(modifierKeys.indexOf(mKeyFocus));
	}
	adapter.notifyDataSetChanged();
	}

	private static boolean isKeyCapsLock(Context context, String key) {
	return key.equals(context.getString(R.string.modifier_keys_caps_lock));
	}

	class ModifierKeyAdapter extends BaseAdapter {
	private int mCurrentItem = 0;
	private List<String> mList;

	ModifierKeyAdapter(List<String> list) {
	this.mList = list;
	}

	@Override
	public int getCount() {
	return mList.size();
	}

	@Override
	public Object getItem(int i) {
	return mList.get(i);
	}

	@Override
	public long getItemId(int i) {
	return i;
	}

	@Override
	public View getView(int i, View view, ViewGroup viewGroup) {
	if (view == null) {
	view = LayoutInflater.from(mActivity).inflate(R.layout.modifier_key_item, null);
	}
	TextView textView = view.findViewById(R.id.modifier_key_text);
	ImageView checkIcon = view.findViewById(R.id.modifier_key_check_icon);
	textView.setText(mList.get(i));
	if (mCurrentItem == i) {
	mKeyFocus = mList.get(i);
	textView.setTextColor(getColorOfMaterialColorPrimary());
	checkIcon.setImageAlpha(255);
	view.setBackground(
	mActivity.getDrawable(R.drawable.modifier_key_lisetview_background));
	} else {
	textView.setTextColor(getColorOfTextColorPrimary());
	checkIcon.setImageAlpha(0);
	view.setBackground(null);
	}
	return view;
	}

	public void setCurrentItem(int currentItem) {
	this.mCurrentItem = currentItem;
	}

	public int getCurrentItem() {
	return this.mCurrentItem;
	}
	}

	private int getColorOfTextColorPrimary() {
	return Utils.getColorAttrDefaultColor(mActivity, android.R.attr.textColorPrimary);
	}

	private int getColorOfTextColorSecondary() {
	return Utils.getColorAttrDefaultColor(mActivity, android.R.attr.textColorSecondary);
	}

	private int getColorOfMaterialColorPrimary() {
	return Utils.getColorAttrDefaultColor(
	mActivity, com.android.internal.R.attr.materialColorPrimary);
	}
	}