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Code Issues Releases Activity

Mobile: Do not restore selection on undo/redo (unreliable)

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This commit is contained in:
Laurent Cozic 2020-06-13 16:46:43 +01:00
parent 1dc4516efc
commit 126918be54
1 changed files with 14 additions and 9 deletions
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23
ReactNativeClient/lib/components/screens/note.js
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@ -77,8 +77,6 @@ class NoteScreenComponent extends BaseScreenComponent {
canUndo: false,
canRedo: false,
},
selection: { start: 0, end: 0 },
};
this.saveActionQueues_ = {};
@ -247,7 +245,6 @@ class NoteScreenComponent extends BaseScreenComponent {
newNote.body = undoState.body;
return {
note: newNote,
selection: Object.assign({}, undoState.selection),
};
});
}
@ -352,7 +349,6 @@ class NoteScreenComponent extends BaseScreenComponent {
undoState(noteBody = null) {
return {
body: noteBody === null ? this.state.note.body : noteBody,
selection: Object.assign({}, this.state.selection),
};
}
@ -424,7 +420,7 @@ class NoteScreenComponent extends BaseScreenComponent {
}
body_selectionChange(event) {
this.setState({ selection: event.nativeEvent.selection });
this.selection = event.nativeEvent.selection;
}
makeSaveAction() {
@ -645,9 +641,9 @@ class NoteScreenComponent extends BaseScreenComponent {
const newNote = Object.assign({}, this.state.note);
if (this.state.mode == 'edit' && !Setting.value('editor.beta') && !!this.state.selection) {
const prefix = newNote.body.substring(0, this.state.selection.start);
const suffix = newNote.body.substring(this.state.selection.end);
if (this.state.mode == 'edit' && !Setting.value('editor.beta') && !!this.selection) {
const prefix = newNote.body.substring(0, this.selection.start);
const suffix = newNote.body.substring(this.selection.end);
newNote.body = `${prefix}\n${resourceTag}\n${suffix}`;
} else {
newNote.body += `\n${resourceTag}`;
@ -1075,6 +1071,16 @@ class NoteScreenComponent extends BaseScreenComponent {
// the whole text input has to be in memory for the scrollview to work. So we keep it as
// a plain TextInput for now.
// See https://github.com/laurent22/joplin/issues/3041
// IMPORTANT: The TextInput selection is unreliable and cannot be used in a controlled component
// context. In other words, the selection should be considered read-only. For example, if the seleciton
// is saved to the state in onSelectionChange and the current text in onChangeText, then set
// back in `selection` and `value` props, it will mostly work. But when typing fast, sooner or
// later the real selection will be different from what is stored in the state, thus making
// the cursor jump around. Eg, when typing "abcdef", it will do this:
// abcd|
// abcde|
// abcde|f
(
<TextInput
autoCapitalize="sentences"
@ -1083,7 +1089,6 @@ class NoteScreenComponent extends BaseScreenComponent {
multiline={true}
value={note.body}
onChangeText={(text) => this.body_changeText(text)}
selection={this.state.selection}
onSelectionChange={this.body_selectionChange}
blurOnSubmit={false}
selectionColor={theme.textSelectionColor}