Reworking how the about text is composed in the about tab

1 files changed, 50 insertions, 46 deletions

diff --git a/plugingui/abouttab.cc b/plugingui/abouttab.cc
index 7e330cb..a04fac2 100644
--- a/plugingui/abouttab.cc
+++ b/plugingui/abouttab.cc
@@ -33,6 +33,48 @@
 namespace GUI
 {
 
+//!Simple helper class to avoid direct repeats of text manipulation.
+class AboutTextBuilder {
+public:
+	//!Class constructor. Sets the separator character.
+	AboutTextBuilder(char _separator='=')
+    :separator_character(_separator)
+	{
+	}
+
+	//!Adds a new section to the "about" text with the given title and contents.
+	//!Returns a reference to the builder so more calls can be chained.
+	AboutTextBuilder& add(const std::string& _title, const std::string& _contents) 
+	{
+		auto repeat=[](std::string& _str, char _fill, size_t _count) 
+		{
+			_str.insert(_str.size(), _count, _fill);
+		};
+
+		repeat(about_text, separator_character, separator_count);
+		about_text+="\n";
+		repeat(about_text, ' ', space_count);
+		about_text+=_title+"\n";
+		repeat(about_text, separator_character, separator_count);
+		repeat(about_text, '\n', 3);
+		about_text+=_contents+"\n";
+
+		return *this;
+	}
+
+	//!Returns the built string.
+	const std::string& get() const 
+	{
+		return about_text;
+	}
+
+private:
+	const size_t separator_count=13; //!< Number of times that the separator character will be added. 
+	const size_t space_count=13; //!< Number of times that the space character will be added before the title.
+	char separator_character; //!< Separator character. Defaults to '='.
+	std::string about_text; //!< Text that will be filled up with calls to "add".
+};
+
 AboutTab::AboutTab(Widget* parent)
 	: Widget(parent)
 {
@@ -52,53 +94,15 @@ void AboutTab::resize(std::size_t width, std::size_t height)
 
 std::string AboutTab::getAboutText()
 {
-	std::string about_text;
-
-	// About
-	about_text.append(
-	"=============\n"
-	"             About\n"
-	"=============\n"
-	"\n");
-	about_text.append(about.data());
-
-	// Version
-	about_text.append(
-	"\n"
-	"=============\n"
-	"            Version\n"
-	"=============\n"
-	"\n");
-	about_text.append(std::string(VERSION) + "\n");
-
-	// Bugs
-	about_text.append(
-	"\n"
-	"=============\n"
-	"            Bugs\n"
-	"=============\n"
-	"\n");
-	about_text.append(bugs.data());
-
-	// Authors
-	about_text.append(
-	"\n"
-	"=============\n"
-	"            Authors\n"
-	"=============\n"
-	"\n");
-	about_text.append(UTF8().toLatin1(authors.data()));
-
-	// GPL
-	about_text.append(
-	"\n"
-	"=============\n"
-	"            License\n"
-	"=============\n"
-	"\n");
-	about_text.append(gpl.data());
+	AboutTextBuilder builder('*');
 
-	return about_text;
+	//This will casually add an extra newline at the end of License.
+	return builder.add("About", about.data())
+	    .add("Version", std::string(VERSION)+"\n")
+	    .add("Bugs", bugs.data())
+	    .add("Authors", UTF8().toLatin1(authors.data()))
+	    .add("License", gpl.data())
+	    .get();
 }
 
 } // GUI::