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AutoCompleter: Improve detection of startToken

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This commit is contained in:
Vishesh Handa
2021-01-22 18:02:20 +01:00
parent c015f886da
commit 923b929392
1 changed files with 18 additions and 11 deletions
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29
lib/main_autocomplete.dart
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@ -103,6 +103,7 @@ class AutoCompleter extends StatefulWidget {
class _AutoCompleterState extends State<AutoCompleter> {
OverlayEntry overlayEntry;
String prevText;
@override
void initState() {
@ -112,6 +113,7 @@ class _AutoCompleterState extends State<AutoCompleter> {
@override
void dispose() {
_hideOverlay();
widget.textController.removeListener(_textChanged);
super.dispose();
}
@ -126,13 +128,19 @@ class _AutoCompleterState extends State<AutoCompleter> {
var cursorPos = selection.baseOffset;
var text = widget.textController.text;
var nextText = text.substring(0, cursorPos);
print('newText: $nextText');
if (nextText.endsWith('[[')) {
_showOverlayTag(context, nextText);
var start = text.lastIndexOf(RegExp(r' |^'), cursorPos - 1) + 1;
var word = text.substring(start, cursorPos);
print('text: $word');
if (word.startsWith(widget.startToken)) {
_showOverlayTag(context, text.substring(0, cursorPos));
} else if (word.endsWith(widget.endToken)) {
_hideOverlay();
}
prevText = text;
}
/// newText is used to calculate where to put the completion box
void _showOverlayTag(BuildContext context, String newText) async {
// Code reference for overlay logic from MTECHVIRAL's video
// https://www.youtube.com/watch?v=KuXKwjv2gTY
@ -164,10 +172,7 @@ class _AutoCompleterState extends State<AutoCompleter> {
//print("Painter ${painter.width} $height");
if (overlayEntry != null) {
overlayEntry.remove();
overlayEntry = null;
}
_hideOverlay();
overlayEntry = OverlayEntry(builder: (context) {
return Positioned(
// Decides where to place the tag on the screen.
@ -190,20 +195,22 @@ class _AutoCompleterState extends State<AutoCompleter> {
// Removes the over lay entry from the Overly after 500 milliseconds
await Future.delayed(5000.milliseconds);
_hideOverlay();
}
void _hideOverlay() {
if (overlayEntry != null) {
overlayEntry.remove();
overlayEntry = null;
}
}
}
// https://levelup.gitconnected.com/flutter-medium-like-text-editor-b41157f50f0e
// https://stackoverflow.com/questions/59243627/flutter-how-to-get-the-coordinates-of-the-cursor-in-a-textfield
// Bug 2: Autocompletion box overlays the bottom nav bar
// Bug 3: On Pressing Enter the Overlay should disappear
// Bug 4: On Deleting the prefix buttons it should also disappear
// Bug 5: Overlay disappears too fast
// Bug 6: When writing a text which has '[[Hell' it doesn't show the autocompletion
// Bug 7: Clicking on the text should result in auto-completion
// Bug 8: On clicking somewhere else the suggestion box should disappear
// Bug 9: RTL support