Improved message edition with pre-selected text.

Telegram/SourceFiles/chat_helpers/message_field.cpp

@@ -1037,3 +1037,28 @@ base::unique_qptr<Ui::RpWidget> PremiumRequiredSendRestriction(
 	});
 	return result;
 }
+
+void SelectTextInFieldWithMargins(
+		not_null<Ui::InputField*> field,
+		const TextSelection &selection) {
+	if (selection.empty()) {
+		return;
+	}
+	auto textCursor = field->textCursor();
+	// Try to set equal margins for top and bottom sides.
+	const auto charsCountInLine = field->width()
+		/ field->st().font->width('W');
+	const auto linesCount = (field->height() / field->st().font->height);
+	const auto selectedLines = (selection.to - selection.from)
+		/ charsCountInLine;
+	constexpr auto kMinDiff = ushort(3);
+	if ((linesCount - selectedLines) > kMinDiff) {
+		textCursor.setPosition(selection.from
+			- charsCountInLine * ((linesCount - 1) / 2));
+		field->setTextCursor(textCursor);
+	}
+	textCursor.setPosition(selection.from);
+	field->setTextCursor(textCursor);
+	textCursor.setPosition(selection.to, QTextCursor::KeepAnchor);
+	field->setTextCursor(textCursor);
+}

Telegram/SourceFiles/chat_helpers/message_field.h

@@ -154,3 +154,7 @@ private:
 	QWidget *parent,
 	not_null<UserData*> user,
 	not_null<Window::SessionController*> controller);
+
+void SelectTextInFieldWithMargins(
+	not_null<Ui::InputField*> field,
+	const TextSelection &selection);

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -2131,7 +2131,17 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 		if (editItem) {
 			const auto editItemId = editItem->fullId();
 			_menu->addAction(tr::lng_context_edit_msg(tr::now), [=] {
-				_widget->editMessage(editItemId);
+				if (const auto item = session->data().message(editItemId)) {
+					auto it = _selected.find(item);
+					const auto selection = ((it != _selected.end())
+							&& (it->second != FullSelection))
+						? it->second
+						: TextSelection();
+					if (!selection.empty()) {
+						clearSelected(true);
+					}
+					_widget->editMessage(item, selection);
+				}
 			}, &st::menuIconEdit);
 		}
 		const auto pinItem = (item->canPin() && item->isPinned())

Telegram/SourceFiles/history/history_widget.cpp

@@ -6606,7 +6606,7 @@ void HistoryWidget::keyPressEvent(QKeyEvent *e) {
 			&& _field->empty()
 			&& !_editMsgId
 			&& !_replyTo) {
-			editMessage(item);
+			editMessage(item, {});
 			return;
 		}
 		_scroll->keyPressEvent(e);
@@ -7570,13 +7570,9 @@ void HistoryWidget::setReplyFieldsFromProcessing() {
 	setInnerFocus();
 }
 
-void HistoryWidget::editMessage(FullMsgId itemId) {
-	if (const auto item = session().data().message(itemId)) {
-		editMessage(item);
-	}
-}
-
-void HistoryWidget::editMessage(not_null<HistoryItem*> item) {
+void HistoryWidget::editMessage(
+		not_null<HistoryItem*> item,
+		const TextSelection &selection) {
 	if (_chooseTheme) {
 		toggleChooseChatTheme(_peer);
 	} else if (_voiceRecordBar->isActive()) {
@@ -7625,6 +7621,7 @@ void HistoryWidget::editMessage(not_null<HistoryItem*> item) {
 	updateReplyToName();
 	updateControlsGeometry();
 	updateField();
+	SelectTextInFieldWithMargins(_field, selection);
 
 	_saveDraftText = true;
 	_saveDraftStart = crl::now();

Telegram/SourceFiles/history/history_widget.h

@@ -195,8 +195,9 @@ public:
 		not_null<HistoryItem*> item,
 		TextWithEntities quote = {},
 		int quoteOffset = 0);
-	void editMessage(FullMsgId itemId);
-	void editMessage(not_null<HistoryItem*> item);
+	void editMessage(
+		not_null<HistoryItem*> item,
+		const TextSelection &selection);
 
 	[[nodiscard]] FullReplyTo replyTo() const;
 	bool lastForceReplyReplied(const FullMsgId &replyTo) const;

Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp

@@ -2857,9 +2857,12 @@ void ComposeControls::updateHeight() {
 	}
 }
 
-void ComposeControls::editMessage(FullMsgId id) {
+void ComposeControls::editMessage(
+		FullMsgId id,
+		const TextSelection &selection) {
 	if (const auto item = session().data().message(id)) {
 		editMessage(item);
+		SelectTextInFieldWithMargins(_field, selection);
 	}
 }
 

Telegram/SourceFiles/history/view/controls/history_view_compose_controls.h

@@ -198,7 +198,7 @@ public:
 	void showFinished();
 	void raisePanels();
 
-	void editMessage(FullMsgId id);
+	void editMessage(FullMsgId id, const TextSelection &selection);
 	void cancelEditMessage();
 	void maybeCancelEditMessage(); // Confirm if changed and cancel.
 

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -2425,6 +2425,11 @@ SelectedItems ListWidget::getSelectedItems() const {
 	return collectSelectedItems();
 }
 
+const TextSelection &ListWidget::getSelectedTextRange(
+		not_null<HistoryItem*> item) const {
+	return _selectedTextRange;
+}
+
 int ListWidget::findItemIndexByY(int y) const {
 	Expects(!_items.empty());
 

Telegram/SourceFiles/history/view/history_view_list_widget.h

@@ -248,6 +248,8 @@ public:
 	[[nodiscard]] TextForMimeData getSelectedText() const;
 	[[nodiscard]] MessageIdsList getSelectedIds() const;
 	[[nodiscard]] SelectedItems getSelectedItems() const;
+	[[nodiscard]] const TextSelection &getSelectedTextRange(
+		not_null<HistoryItem*> item) const;
 	void cancelSelection();
 	void selectItem(not_null<HistoryItem*> item);
 	void selectItemAsGroup(not_null<HistoryItem*> item);

Telegram/SourceFiles/history/view/history_view_replies_section.cpp

@@ -316,7 +316,9 @@ RepliesWidget::RepliesWidget(
 		if (const auto item = session().data().message(fullId)) {
 			const auto media = item->media();
 			if (!media || media->webpage() || media->allowsEditCaption()) {
-				_composeControls->editMessage(fullId);
+				_composeControls->editMessage(
+					fullId,
+					_inner->getSelectedTextRange(item));
 			}
 		}
 	}, _inner->lifetime());

Telegram/SourceFiles/history/view/history_view_scheduled_section.cpp

@@ -172,7 +172,9 @@ ScheduledWidget::ScheduledWidget(
 		if (const auto item = session().data().message(fullId)) {
 			const auto media = item->media();
 			if (!media || media->webpage() || media->allowsEditCaption()) {
-				_composeControls->editMessage(fullId);
+				_composeControls->editMessage(
+					fullId,
+					_inner->getSelectedTextRange(item));
 			}
 		}
 	}, _inner->lifetime());

Telegram/SourceFiles/settings/business/settings_shortcut_messages.cpp

@@ -394,7 +394,9 @@ ShortcutMessages::ShortcutMessages(
 		if (const auto item = _session->data().message(fullId)) {
 			const auto media = item->media();
 			if (!media || media->webpage() || media->allowsEditCaption()) {
-				_composeControls->editMessage(fullId);
+				_composeControls->editMessage(
+					fullId,
+					_inner->getSelectedTextRange(item));
 			}
 		}
 	}, _inner->lifetime());