| /* |
| * Copyright (C) 2006 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 android.text.method; |
| |
| import android.text.AutoText; |
| import android.text.Editable; |
| import android.text.NoCopySpan; |
| import android.text.Selection; |
| import android.text.Spannable; |
| import android.text.TextUtils; |
| import android.text.method.TextKeyListener.Capitalize; |
| import android.util.SparseArray; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| import android.view.View; |
| |
| /** |
| * This is the standard key listener for alphabetic input on qwerty |
| * keyboards. You should generally not need to instantiate this yourself; |
| * TextKeyListener will do it for you. |
| * <p></p> |
| * As for all implementations of {@link KeyListener}, this class is only concerned |
| * with hardware keyboards. Software input methods have no obligation to trigger |
| * the methods in this class. |
| */ |
| public class QwertyKeyListener extends BaseKeyListener { |
| private static QwertyKeyListener[] sInstance = |
| new QwertyKeyListener[Capitalize.values().length * 2]; |
| private static QwertyKeyListener sFullKeyboardInstance; |
| |
| private Capitalize mAutoCap; |
| private boolean mAutoText; |
| private boolean mFullKeyboard; |
| |
| private QwertyKeyListener(Capitalize cap, boolean autoText, boolean fullKeyboard) { |
| mAutoCap = cap; |
| mAutoText = autoText; |
| mFullKeyboard = fullKeyboard; |
| } |
| |
| public QwertyKeyListener(Capitalize cap, boolean autoText) { |
| this(cap, autoText, false); |
| } |
| |
| /** |
| * Returns a new or existing instance with the specified capitalization |
| * and correction properties. |
| */ |
| public static QwertyKeyListener getInstance(boolean autoText, Capitalize cap) { |
| int off = cap.ordinal() * 2 + (autoText ? 1 : 0); |
| |
| if (sInstance[off] == null) { |
| sInstance[off] = new QwertyKeyListener(cap, autoText); |
| } |
| |
| return sInstance[off]; |
| } |
| |
| /** |
| * Gets an instance of the listener suitable for use with full keyboards. |
| * Disables auto-capitalization, auto-text and long-press initiated on-screen |
| * character pickers. |
| */ |
| public static QwertyKeyListener getInstanceForFullKeyboard() { |
| if (sFullKeyboardInstance == null) { |
| sFullKeyboardInstance = new QwertyKeyListener(Capitalize.NONE, false, true); |
| } |
| return sFullKeyboardInstance; |
| } |
| |
| public int getInputType() { |
| return makeTextContentType(mAutoCap, mAutoText); |
| } |
| |
| public boolean onKeyDown(View view, Editable content, |
| int keyCode, KeyEvent event) { |
| int selStart, selEnd; |
| int pref = 0; |
| |
| if (view != null) { |
| pref = TextKeyListener.getInstance().getPrefs(view.getContext()); |
| } |
| |
| { |
| int a = Selection.getSelectionStart(content); |
| int b = Selection.getSelectionEnd(content); |
| |
| selStart = Math.min(a, b); |
| selEnd = Math.max(a, b); |
| |
| if (selStart < 0 || selEnd < 0) { |
| selStart = selEnd = 0; |
| Selection.setSelection(content, 0, 0); |
| } |
| } |
| |
| int activeStart = content.getSpanStart(TextKeyListener.ACTIVE); |
| int activeEnd = content.getSpanEnd(TextKeyListener.ACTIVE); |
| |
| // QWERTY keyboard normal case |
| |
| int i = event.getUnicodeChar(getMetaState(content, event)); |
| |
| if (!mFullKeyboard) { |
| int count = event.getRepeatCount(); |
| if (count > 0 && selStart == selEnd && selStart > 0) { |
| char c = content.charAt(selStart - 1); |
| |
| if ((c == i || c == Character.toUpperCase(i)) && view != null) { |
| if (showCharacterPicker(view, content, c, false, count)) { |
| resetMetaState(content); |
| return true; |
| } |
| } |
| } |
| } |
| |
| if (i == KeyCharacterMap.PICKER_DIALOG_INPUT) { |
| if (view != null) { |
| showCharacterPicker(view, content, |
| KeyCharacterMap.PICKER_DIALOG_INPUT, true, 1); |
| } |
| resetMetaState(content); |
| return true; |
| } |
| |
| if (i == KeyCharacterMap.HEX_INPUT) { |
| int start; |
| |
| if (selStart == selEnd) { |
| start = selEnd; |
| |
| while (start > 0 && selEnd - start < 4 && |
| Character.digit(content.charAt(start - 1), 16) >= 0) { |
| start--; |
| } |
| } else { |
| start = selStart; |
| } |
| |
| int ch = -1; |
| try { |
| String hex = TextUtils.substring(content, start, selEnd); |
| ch = Integer.parseInt(hex, 16); |
| } catch (NumberFormatException nfe) { } |
| |
| if (ch >= 0) { |
| selStart = start; |
| Selection.setSelection(content, selStart, selEnd); |
| i = ch; |
| } else { |
| i = 0; |
| } |
| } |
| |
| if (i != 0) { |
| boolean dead = false; |
| |
| if ((i & KeyCharacterMap.COMBINING_ACCENT) != 0) { |
| dead = true; |
| i = i & KeyCharacterMap.COMBINING_ACCENT_MASK; |
| } |
| |
| if (activeStart == selStart && activeEnd == selEnd) { |
| boolean replace = false; |
| |
| if (selEnd - selStart - 1 == 0) { |
| char accent = content.charAt(selStart); |
| int composed = event.getDeadChar(accent, i); |
| |
| if (composed != 0) { |
| i = composed; |
| replace = true; |
| dead = false; |
| } |
| } |
| |
| if (!replace) { |
| Selection.setSelection(content, selEnd); |
| content.removeSpan(TextKeyListener.ACTIVE); |
| selStart = selEnd; |
| } |
| } |
| |
| if ((pref & TextKeyListener.AUTO_CAP) != 0 |
| && Character.isLowerCase(i) |
| && TextKeyListener.shouldCap(mAutoCap, content, selStart)) { |
| int where = content.getSpanEnd(TextKeyListener.CAPPED); |
| int flags = content.getSpanFlags(TextKeyListener.CAPPED); |
| |
| if (where == selStart && (((flags >> 16) & 0xFFFF) == i)) { |
| content.removeSpan(TextKeyListener.CAPPED); |
| } else { |
| flags = i << 16; |
| i = Character.toUpperCase(i); |
| |
| if (selStart == 0) |
| content.setSpan(TextKeyListener.CAPPED, 0, 0, |
| Spannable.SPAN_MARK_MARK | flags); |
| else |
| content.setSpan(TextKeyListener.CAPPED, |
| selStart - 1, selStart, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE | |
| flags); |
| } |
| } |
| |
| if (selStart != selEnd) { |
| Selection.setSelection(content, selEnd); |
| } |
| content.setSpan(OLD_SEL_START, selStart, selStart, |
| Spannable.SPAN_MARK_MARK); |
| |
| content.replace(selStart, selEnd, String.valueOf((char) i)); |
| |
| int oldStart = content.getSpanStart(OLD_SEL_START); |
| selEnd = Selection.getSelectionEnd(content); |
| |
| if (oldStart < selEnd) { |
| content.setSpan(TextKeyListener.LAST_TYPED, |
| oldStart, selEnd, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| |
| if (dead) { |
| Selection.setSelection(content, oldStart, selEnd); |
| content.setSpan(TextKeyListener.ACTIVE, oldStart, selEnd, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } |
| } |
| |
| adjustMetaAfterKeypress(content); |
| |
| // potentially do autotext replacement if the character |
| // that was typed was an autotext terminator |
| |
| if ((pref & TextKeyListener.AUTO_TEXT) != 0 && mAutoText && |
| (i == ' ' || i == '\t' || i == '\n' || |
| i == ',' || i == '.' || i == '!' || i == '?' || |
| i == '"' || Character.getType(i) == Character.END_PUNCTUATION) && |
| content.getSpanEnd(TextKeyListener.INHIBIT_REPLACEMENT) |
| != oldStart) { |
| int x; |
| |
| for (x = oldStart; x > 0; x--) { |
| char c = content.charAt(x - 1); |
| if (c != '\'' && !Character.isLetter(c)) { |
| break; |
| } |
| } |
| |
| String rep = getReplacement(content, x, oldStart, view); |
| |
| if (rep != null) { |
| Replaced[] repl = content.getSpans(0, content.length(), |
| Replaced.class); |
| for (int a = 0; a < repl.length; a++) |
| content.removeSpan(repl[a]); |
| |
| char[] orig = new char[oldStart - x]; |
| TextUtils.getChars(content, x, oldStart, orig, 0); |
| |
| content.setSpan(new Replaced(orig), x, oldStart, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| content.replace(x, oldStart, rep); |
| } |
| } |
| |
| // Replace two spaces by a period and a space. |
| |
| if ((pref & TextKeyListener.AUTO_PERIOD) != 0 && mAutoText) { |
| selEnd = Selection.getSelectionEnd(content); |
| if (selEnd - 3 >= 0) { |
| if (content.charAt(selEnd - 1) == ' ' && |
| content.charAt(selEnd - 2) == ' ') { |
| char c = content.charAt(selEnd - 3); |
| |
| for (int j = selEnd - 3; j > 0; j--) { |
| if (c == '"' || |
| Character.getType(c) == Character.END_PUNCTUATION) { |
| c = content.charAt(j - 1); |
| } else { |
| break; |
| } |
| } |
| |
| if (Character.isLetter(c) || Character.isDigit(c)) { |
| content.replace(selEnd - 2, selEnd - 1, "."); |
| } |
| } |
| } |
| } |
| |
| return true; |
| } else if (keyCode == KeyEvent.KEYCODE_DEL |
| && (event.hasNoModifiers() || event.hasModifiers(KeyEvent.META_ALT_ON)) |
| && selStart == selEnd) { |
| // special backspace case for undoing autotext |
| |
| int consider = 1; |
| |
| // if backspacing over the last typed character, |
| // it undoes the autotext prior to that character |
| // (unless the character typed was newline, in which |
| // case this behavior would be confusing) |
| |
| if (content.getSpanEnd(TextKeyListener.LAST_TYPED) == selStart) { |
| if (content.charAt(selStart - 1) != '\n') |
| consider = 2; |
| } |
| |
| Replaced[] repl = content.getSpans(selStart - consider, selStart, |
| Replaced.class); |
| |
| if (repl.length > 0) { |
| int st = content.getSpanStart(repl[0]); |
| int en = content.getSpanEnd(repl[0]); |
| String old = new String(repl[0].mText); |
| |
| content.removeSpan(repl[0]); |
| |
| // only cancel the autocomplete if the cursor is at the end of |
| // the replaced span (or after it, because the user is |
| // backspacing over the space after the word, not the word |
| // itself). |
| if (selStart >= en) { |
| content.setSpan(TextKeyListener.INHIBIT_REPLACEMENT, |
| en, en, Spannable.SPAN_POINT_POINT); |
| content.replace(st, en, old); |
| |
| en = content.getSpanStart(TextKeyListener.INHIBIT_REPLACEMENT); |
| if (en - 1 >= 0) { |
| content.setSpan(TextKeyListener.INHIBIT_REPLACEMENT, |
| en - 1, en, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } else { |
| content.removeSpan(TextKeyListener.INHIBIT_REPLACEMENT); |
| } |
| adjustMetaAfterKeypress(content); |
| } else { |
| adjustMetaAfterKeypress(content); |
| return super.onKeyDown(view, content, keyCode, event); |
| } |
| |
| return true; |
| } |
| } |
| |
| return super.onKeyDown(view, content, keyCode, event); |
| } |
| |
| private String getReplacement(CharSequence src, int start, int end, |
| View view) { |
| int len = end - start; |
| boolean changecase = false; |
| |
| String replacement = AutoText.get(src, start, end, view); |
| |
| if (replacement == null) { |
| String key = TextUtils.substring(src, start, end).toLowerCase(); |
| replacement = AutoText.get(key, 0, end - start, view); |
| changecase = true; |
| |
| if (replacement == null) |
| return null; |
| } |
| |
| int caps = 0; |
| |
| if (changecase) { |
| for (int j = start; j < end; j++) { |
| if (Character.isUpperCase(src.charAt(j))) |
| caps++; |
| } |
| } |
| |
| String out; |
| |
| if (caps == 0) |
| out = replacement; |
| else if (caps == 1) |
| out = toTitleCase(replacement); |
| else if (caps == len) |
| out = replacement.toUpperCase(); |
| else |
| out = toTitleCase(replacement); |
| |
| if (out.length() == len && |
| TextUtils.regionMatches(src, start, out, 0, len)) |
| return null; |
| |
| return out; |
| } |
| |
| /** |
| * Marks the specified region of <code>content</code> as having |
| * contained <code>original</code> prior to AutoText replacement. |
| * Call this method when you have done or are about to do an |
| * AutoText-style replacement on a region of text and want to let |
| * the same mechanism (the user pressing DEL immediately after the |
| * change) undo the replacement. |
| * |
| * @param content the Editable text where the replacement was made |
| * @param start the start of the replaced region |
| * @param end the end of the replaced region; the location of the cursor |
| * @param original the text to be restored if the user presses DEL |
| */ |
| public static void markAsReplaced(Spannable content, int start, int end, |
| String original) { |
| Replaced[] repl = content.getSpans(0, content.length(), Replaced.class); |
| for (int a = 0; a < repl.length; a++) { |
| content.removeSpan(repl[a]); |
| } |
| |
| int len = original.length(); |
| char[] orig = new char[len]; |
| original.getChars(0, len, orig, 0); |
| |
| content.setSpan(new Replaced(orig), start, end, |
| Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); |
| } |
| |
| private static SparseArray<String> PICKER_SETS = |
| new SparseArray<String>(); |
| static { |
| PICKER_SETS.put('A', "\u00C0\u00C1\u00C2\u00C4\u00C6\u00C3\u00C5\u0104\u0100"); |
| PICKER_SETS.put('C', "\u00C7\u0106\u010C"); |
| PICKER_SETS.put('D', "\u010E"); |
| PICKER_SETS.put('E', "\u00C8\u00C9\u00CA\u00CB\u0118\u011A\u0112"); |
| PICKER_SETS.put('G', "\u011E"); |
| PICKER_SETS.put('L', "\u0141"); |
| PICKER_SETS.put('I', "\u00CC\u00CD\u00CE\u00CF\u012A\u0130"); |
| PICKER_SETS.put('N', "\u00D1\u0143\u0147"); |
| PICKER_SETS.put('O', "\u00D8\u0152\u00D5\u00D2\u00D3\u00D4\u00D6\u014C"); |
| PICKER_SETS.put('R', "\u0158"); |
| PICKER_SETS.put('S', "\u015A\u0160\u015E"); |
| PICKER_SETS.put('T', "\u0164"); |
| PICKER_SETS.put('U', "\u00D9\u00DA\u00DB\u00DC\u016E\u016A"); |
| PICKER_SETS.put('Y', "\u00DD\u0178"); |
| PICKER_SETS.put('Z', "\u0179\u017B\u017D"); |
| PICKER_SETS.put('a', "\u00E0\u00E1\u00E2\u00E4\u00E6\u00E3\u00E5\u0105\u0101"); |
| PICKER_SETS.put('c', "\u00E7\u0107\u010D"); |
| PICKER_SETS.put('d', "\u010F"); |
| PICKER_SETS.put('e', "\u00E8\u00E9\u00EA\u00EB\u0119\u011B\u0113"); |
| PICKER_SETS.put('g', "\u011F"); |
| PICKER_SETS.put('i', "\u00EC\u00ED\u00EE\u00EF\u012B\u0131"); |
| PICKER_SETS.put('l', "\u0142"); |
| PICKER_SETS.put('n', "\u00F1\u0144\u0148"); |
| PICKER_SETS.put('o', "\u00F8\u0153\u00F5\u00F2\u00F3\u00F4\u00F6\u014D"); |
| PICKER_SETS.put('r', "\u0159"); |
| PICKER_SETS.put('s', "\u00A7\u00DF\u015B\u0161\u015F"); |
| PICKER_SETS.put('t', "\u0165"); |
| PICKER_SETS.put('u', "\u00F9\u00FA\u00FB\u00FC\u016F\u016B"); |
| PICKER_SETS.put('y', "\u00FD\u00FF"); |
| PICKER_SETS.put('z', "\u017A\u017C\u017E"); |
| PICKER_SETS.put(KeyCharacterMap.PICKER_DIALOG_INPUT, |
| "\u2026\u00A5\u2022\u00AE\u00A9\u00B1[]{}\\|"); |
| PICKER_SETS.put('/', "\\"); |
| |
| // From packages/inputmethods/LatinIME/res/xml/kbd_symbols.xml |
| |
| PICKER_SETS.put('1', "\u00b9\u00bd\u2153\u00bc\u215b"); |
| PICKER_SETS.put('2', "\u00b2\u2154"); |
| PICKER_SETS.put('3', "\u00b3\u00be\u215c"); |
| PICKER_SETS.put('4', "\u2074"); |
| PICKER_SETS.put('5', "\u215d"); |
| PICKER_SETS.put('7', "\u215e"); |
| PICKER_SETS.put('0', "\u207f\u2205"); |
| PICKER_SETS.put('$', "\u00a2\u00a3\u20ac\u00a5\u20a3\u20a4\u20b1"); |
| PICKER_SETS.put('%', "\u2030"); |
| PICKER_SETS.put('*', "\u2020\u2021"); |
| PICKER_SETS.put('-', "\u2013\u2014"); |
| PICKER_SETS.put('+', "\u00b1"); |
| PICKER_SETS.put('(', "[{<"); |
| PICKER_SETS.put(')', "]}>"); |
| PICKER_SETS.put('!', "\u00a1"); |
| PICKER_SETS.put('"', "\u201c\u201d\u00ab\u00bb\u02dd"); |
| PICKER_SETS.put('?', "\u00bf"); |
| PICKER_SETS.put(',', "\u201a\u201e"); |
| |
| // From packages/inputmethods/LatinIME/res/xml/kbd_symbols_shift.xml |
| |
| PICKER_SETS.put('=', "\u2260\u2248\u221e"); |
| PICKER_SETS.put('<', "\u2264\u00ab\u2039"); |
| PICKER_SETS.put('>', "\u2265\u00bb\u203a"); |
| }; |
| |
| private boolean showCharacterPicker(View view, Editable content, char c, |
| boolean insert, int count) { |
| String set = PICKER_SETS.get(c); |
| if (set == null) { |
| return false; |
| } |
| |
| if (count == 1) { |
| new CharacterPickerDialog(view.getContext(), |
| view, content, set, insert).show(); |
| } |
| |
| return true; |
| } |
| |
| private static String toTitleCase(String src) { |
| return Character.toUpperCase(src.charAt(0)) + src.substring(1); |
| } |
| |
| /* package */ static class Replaced implements NoCopySpan |
| { |
| public Replaced(char[] text) { |
| mText = text; |
| } |
| |
| private char[] mText; |
| } |
| } |
| |