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Don't send same text changes from text input 

Differential Revision: D2663576

fb-gh-sync-id: 259040eda54982c10374f9f1ee89f67a459937d0
This commit is contained in:
Andrei Coman 2015-11-17 07:23:21 -08:00 committed by facebook-github-bot-7
parent 5b796cec34
commit fc511f0730
1 changed files with 40 additions and 33 deletions
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73
ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
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@ -320,40 +320,47 @@ public class ReactTextInputManager extends
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Rearranging the text (i.e. changing between singleline and multiline attributes) can
// also trigger onTextChanged, call the event in JS only when the text actually changed
if (count > 0 || before > 0) {
Assertions.assertNotNull(mPreviousText);
int contentWidth = mEditText.getWidth();
int contentHeight = mEditText.getHeight();
// Use instead size of text content within EditText when available
if (mEditText.getLayout() != null) {
contentWidth = mEditText.getCompoundPaddingLeft() + mEditText.getLayout().getWidth() +
mEditText.getCompoundPaddingRight();
contentHeight = mEditText.getCompoundPaddingTop() + mEditText.getLayout().getHeight() +
mEditText.getCompoundPaddingTop();
}
// The event that contains the event counter and updates it must be sent first.
// TODO: t7936714 merge these events
mEventDispatcher.dispatchEvent(
new ReactTextChangedEvent(
mEditText.getId(),
SystemClock.uptimeMillis(),
s.toString(),
(int) PixelUtil.toDIPFromPixel(contentWidth),
(int) PixelUtil.toDIPFromPixel(contentHeight),
mEditText.incrementAndGetEventCounter()));
mEventDispatcher.dispatchEvent(
new ReactTextInputEvent(
mEditText.getId(),
SystemClock.uptimeMillis(),
count > 0 ? s.toString().substring(start, start + count) : "",
before > 0 ? mPreviousText.substring(start, start + before) : "",
start,
count > 0 ? start + count - 1 : start + before));
if (count == 0 && before == 0) {
return;
}
Assertions.assertNotNull(mPreviousText);
String newText = s.toString().substring(start, start + count);
String oldText = mPreviousText.substring(start, start + before);
// Don't send same text changes
if (count == before && newText.equals(oldText)) {
return;
}
int contentWidth = mEditText.getWidth();
int contentHeight = mEditText.getHeight();
// Use instead size of text content within EditText when available
if (mEditText.getLayout() != null) {
contentWidth = mEditText.getCompoundPaddingLeft() + mEditText.getLayout().getWidth() +
mEditText.getCompoundPaddingRight();
contentHeight = mEditText.getCompoundPaddingTop() + mEditText.getLayout().getHeight() +
mEditText.getCompoundPaddingTop();
}
// The event that contains the event counter and updates it must be sent first.
// TODO: t7936714 merge these events
mEventDispatcher.dispatchEvent(
new ReactTextChangedEvent(
mEditText.getId(),
SystemClock.uptimeMillis(),
s.toString(),
(int) PixelUtil.toDIPFromPixel(contentWidth),
(int) PixelUtil.toDIPFromPixel(contentHeight),
mEditText.incrementAndGetEventCounter()));
mEventDispatcher.dispatchEvent(
new ReactTextInputEvent(
mEditText.getId(),
SystemClock.uptimeMillis(),
newText,
oldText,
start,
count > 0 ? start + count - 1 : start + before));
}
@Override