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fixed recomposing sometimes starting a the wrong character

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This commit is contained in:
sspanak 2024-09-04 14:18:34 +03:00
parent 77085b915c
commit 83c2296d9f
1 changed files with 22 additions and 7 deletions
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29
app/src/main/java/io/github/sspanak/tt9/ime/helpers/TextField.java
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@ -22,6 +22,7 @@ import io.github.sspanak.tt9.util.Text;
public class TextField extends InputField {
private CharSequence composingText = "";
private final boolean isComposingSupported;
private final boolean isNonText;
public TextField(InputConnection inputConnection, EditorInfo inputField) {
@ -29,6 +30,7 @@ public class TextField extends InputField {
InputType inputType = new InputType(inputConnection, inputField);
isComposingSupported = !inputType.isNumeric() && !inputType.isLimited() && !inputType.isRustDesk();
isNonText = !inputType.isText();
}
@ -150,16 +152,29 @@ public class TextField extends InputField {
/**
* Deletes one character by emulating a backspace key event (useful for deleting emoji and Unicode
* characters); Or deletes a region of text at once (faster, but may leave half a surrogate pair).
* Deletes one or more characters, by using the most appropriate method for the current input field.
* It can either send a delete key event to delete a single character or use the faster
* "deleteSurroundingText()" to delete a region of text or a Unicode character.
*/
public void deleteChars(int numberOfChars) {
if (numberOfChars == 1) {
connection.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
connection.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL));
} else if (numberOfChars > 1) {
connection.deleteSurroundingText(numberOfChars, 0);
if (numberOfChars < 0 || connection == null) {
return;
}
if (isNonText) {
sendDownUpKeyEvents(KeyEvent.KEYCODE_DEL);
return;
}
if (numberOfChars == 1) {
// if we are about to delete a surrogate pair, make sure to delete both Java chars
String before = getStringBeforeCursor(2);
if (before.length() > 1 && Character.isSurrogatePair(before.charAt(0), before.charAt(1))) {
numberOfChars = 2;
}
}
connection.deleteSurroundingText(numberOfChars, 0);
}