From 24d69ee6792f324d8f9c84d9da9f89f763d4dca8 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Fri, 18 Oct 2019 00:26:03 +0300
Subject: [PATCH] Added rpl::event_stream for document contents changes in
 InputField.

---
 ui/widgets/input_fields.cpp |  1 +
 ui/widgets/input_fields.h   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/ui/widgets/input_fields.cpp b/ui/widgets/input_fields.cpp
index 8ad10f0..1583ddd 100644
--- a/ui/widgets/input_fields.cpp
+++ b/ui/widgets/input_fields.cpp
@@ -2210,6 +2210,7 @@ void InputField::onDocumentContentsChange(
 		_correcting = false;
 		QTextCursor(document->docHandle(), 0).endEditBlock();
 		handleContentsChanged();
+		_documentContentsChanges.fire({position, charsRemoved, charsAdded});
 	});
 
 	chopByMaxLength(insertPosition, insertLength);
diff --git a/ui/widgets/input_fields.h b/ui/widgets/input_fields.h
index 5943da3..2dc3723 100644
--- a/ui/widgets/input_fields.h
+++ b/ui/widgets/input_fields.h
@@ -315,6 +315,15 @@ public:
 	int scrollTopMax() const;
 	void scrollTo(int top);
 
+	struct DocumentChangeInfo {
+		int position = 0;
+		int added = 0;
+		int removed = 0;
+	};
+	auto documentContentsChanges() {
+		return _documentContentsChanges.events();
+	}
+
 	~InputField();
 
 private slots:
@@ -514,6 +523,8 @@ private:
 	InstantReplaces _mutableInstantReplaces;
 	bool _instantReplacesEnabled = true;
 
+	rpl::event_stream<DocumentChangeInfo> _documentContentsChanges;
+
 };
 
 class MaskedInputField : public RpWidgetWrap<QLineEdit> {