Method InsertText

libraries/ZWidget/src/widgets/textedit/textedit.cpp:733–774

}

void TextEdit::InsertText(ivec2 pos, const std::string& str)
{
	undo_info.first_erase = false;
	if (undo_info.first_text_insert)
	{
		undo_info.undo_text = GetText();
		undo_info.first_text_insert = false;
	}

	// checking if insert exceeds max length
	if (ToOffset(ivec2(lines[lines.size() - 1].text.size(), lines.size() - 1)) + str.length() > max_length)
	{
		return;
	}

	std::string::size_type start = 0;
	while (true)
	{
		std::string::size_type next_newline = str.find('\n', start);

		lines[pos.y].text.insert(pos.x, str.substr(start, next_newline - start));
		lines[pos.y].invalidated = true;

		if (next_newline == std::string::npos)
			break;

		pos.x += next_newline - start;

		Line line;
		line.text = lines[pos.y].text.substr(pos.x);
		lines.insert(lines.begin() + pos.y + 1, line);
		lines[pos.y].text = lines[pos.y].text.substr(0, pos.x);
		lines[pos.y].invalidated = true;
		pos = ivec2(0, pos.y + 1);

		start = next_newline + 1;
	}

	MoveVerticalScroll();

	Update();
}

void TextEdit::Backspace()
{