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Move two editing utility methods to RichInputConnection

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Change-Id: If8d03bea1b6369cb3043da6321048d052995d664
This commit is contained in:
Jean Chalard 2012-06-08 21:45:41 +09:00
parent 70a046f8ca
commit 747cf0435a
2 changed files with 48 additions and 40 deletions
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44
java/src/com/android/inputmethod/latin/LatinIME.java
View file

@ -1352,7 +1352,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
// In many cases, we may have to put the keyboard in auto-shift state again.
mHandler.postUpdateShiftState();
if (mEnteredText != null && sameAsTextBeforeCursor(mEnteredText)) {
if (mEnteredText != null && mConnection.sameAsTextBeforeCursor(mEnteredText)) {
// Cancel multi-character input: remove the text we just entered.
// This is triggered on backspace after a key that inputs multiple characters,
// like the smiley key or the .com key.
@ -2000,52 +2000,16 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
return null;
}
private boolean sameAsTextBeforeCursor(final CharSequence text) {
final CharSequence beforeText = mConnection.getTextBeforeCursor(text.length(), 0);
return TextUtils.equals(text, beforeText);
}
/**
* Check if the cursor is actually at the end of a word. If so, restart suggestions on this
* word, else do nothing.
*/
private void restartSuggestionsOnWordBeforeCursorIfAtEndOfWord() {
// Bail out if the cursor is not at the end of a word (cursor must be preceded by
// non-whitespace, non-separator, non-start-of-text)
// Example ("|" is the cursor here) : <SOL>"|a" " |a" " | " all get rejected here.
final CharSequence textBeforeCursor = mConnection.getTextBeforeCursor(1, 0);
if (TextUtils.isEmpty(textBeforeCursor)
|| mCurrentSettings.isWordSeparator(textBeforeCursor.charAt(0))) return;
// Bail out if the cursor is in the middle of a word (cursor must be followed by whitespace,
// separator or end of line/text)
// Example: "test|"<EOL> "te|st" get rejected here
final CharSequence textAfterCursor = mConnection.getTextAfterCursor(1, 0);
if (!TextUtils.isEmpty(textAfterCursor)
&& !mCurrentSettings.isWordSeparator(textAfterCursor.charAt(0))) return;
// Bail out if word before cursor is 0-length or a single non letter (like an apostrophe)
// Example: " -|" gets rejected here but "e-|" and "e|" are okay
CharSequence word = mConnection.getWordAtCursor(mCurrentSettings.mWordSeparators);
// We don't suggest on leading single quotes, so we have to remove them from the word if
// it starts with single quotes.
while (!TextUtils.isEmpty(word) && Keyboard.CODE_SINGLE_QUOTE == word.charAt(0)) {
word = word.subSequence(1, word.length());
}
if (TextUtils.isEmpty(word)) return;
final char firstChar = word.charAt(0); // we just tested that word is not empty
if (word.length() == 1 && !Character.isLetter(firstChar)) return;
// We only suggest on words that start with a letter or a symbol that is excluded from
// word separators (see #handleCharacterWhileInBatchEdit).
if (!(isAlphabet(firstChar)
|| mCurrentSettings.isSymbolExcludedFromWordSeparators(firstChar))) {
return;
}
// Okay, we are at the end of a word. Restart suggestions.
final CharSequence word = mConnection.getWordBeforeCursorIfAtEndOfWord(mCurrentSettings);
if (null != word) {
restartSuggestionsOnWordBeforeCursor(word);
}
}
private void restartSuggestionsOnWordBeforeCursor(final CharSequence word) {
mWordComposer.setComposingWord(word, mKeyboardSwitcher.getKeyboard());

44
java/src/com/android/inputmethod/latin/RichInputConnection.java
View file

@ -326,4 +326,48 @@ public class RichInputConnection {
}
}
public boolean sameAsTextBeforeCursor(final CharSequence text) {
final CharSequence beforeText = getTextBeforeCursor(text.length(), 0);
return TextUtils.equals(text, beforeText);
}
/* (non-javadoc)
* Returns the word before the cursor if the cursor is at the end of a word, null otherwise
*/
public CharSequence getWordBeforeCursorIfAtEndOfWord(final SettingsValues settings) {
// Bail out if the cursor is not at the end of a word (cursor must be preceded by
// non-whitespace, non-separator, non-start-of-text)
// Example ("|" is the cursor here) : <SOL>"|a" " |a" " | " all get rejected here.
final CharSequence textBeforeCursor = getTextBeforeCursor(1, 0);
if (TextUtils.isEmpty(textBeforeCursor)
|| settings.isWordSeparator(textBeforeCursor.charAt(0))) return null;
// Bail out if the cursor is in the middle of a word (cursor must be followed by whitespace,
// separator or end of line/text)
// Example: "test|"<EOL> "te|st" get rejected here
final CharSequence textAfterCursor = getTextAfterCursor(1, 0);
if (!TextUtils.isEmpty(textAfterCursor)
&& !settings.isWordSeparator(textAfterCursor.charAt(0))) return null;
// Bail out if word before cursor is 0-length or a single non letter (like an apostrophe)
// Example: " -|" gets rejected here but "e-|" and "e|" are okay
CharSequence word = getWordAtCursor(settings.mWordSeparators);
// We don't suggest on leading single quotes, so we have to remove them from the word if
// it starts with single quotes.
while (!TextUtils.isEmpty(word) && Keyboard.CODE_SINGLE_QUOTE == word.charAt(0)) {
word = word.subSequence(1, word.length());
}
if (TextUtils.isEmpty(word)) return null;
final char firstChar = word.charAt(0); // we just tested that word is not empty
if (word.length() == 1 && !Character.isLetter(firstChar)) return null;
// We only suggest on words that start with a letter or a symbol that is excluded from
// word separators (see #handleCharacterWhileInBatchEdit).
if (!(Character.isLetter(firstChar)
|| settings.isSymbolExcludedFromWordSeparators(firstChar))) {
return null;
}
return word;
}
}