Implemented support for dynamic tab and window titles:

* Added settings for tab and window titles. Both are strings with optional
  placeholders for tab/terminal index, currently active process name and
  current directory.
* Added a generic utility class PatternEvaluator that allows to expand this
  kind of pattern strings and callback classes
  [Tab,Window]TitlePlaceholderMapper that provide the specific expansion for
  the tab and window title placeholders.
* TermWindow:
  - Separated the notions of session (== tab) and window titles. The tty
    clients no longer set the window, but the session title.
  - Use the patterns instead of the hard-coded window/tab titles.
  - Recompute all titles once a second, so changes of running programs are
    reflected.
* The default patterns for tab and window titles are "%1d: %p" (last CWD
  component and name of the running process) and "Terminal %i: %t" (Terminal
  ID and active tab title). Unfortunately the space on the tabs is seriously
  limited, so that the tab title is virtually always truncated. Ideas welcome.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39473 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/terminal/AppearPrefView.cpp

@@ -106,17 +106,48 @@ AppearancePrefView::AppearancePrefView(const char* name,
 			colorsPopUp);
 	fColorField->SetEnabled(false);
 
+	fTabTitle = new BTextControl("tabTitle", B_TRANSLATE("Tab title:"), "",
+		NULL);
+	fTabTitle->SetModificationMessage(
+		new BMessage(MSG_TAB_TITLE_SETTING_CHANGED));
+	fTabTitle->SetToolTip(B_TRANSLATE(
+		"The pattern specifying the tab titles. The following placeholders\n"
+		"can be used:\n"
+		"\t%d\t-\tThe current working directory of the active process.\n"
+		"\t\t\tOptionally the maximum number of path components can be\n"
+		"\t\t\tspecified. E.g. '%2d' for at most two components.\n"
+		"\t%i\t-\tThe index of the tab.\n"
+		"\t%p\t-\tThe name of the active process.\n"
+		"\t%%\t-\tThe character '%'."));
+
+	fWindowTitle = new BTextControl("windowTitle", B_TRANSLATE("Window title:"),
+		"", NULL);
+	fWindowTitle->SetModificationMessage(
+		new BMessage(MSG_WINDOW_TITLE_SETTING_CHANGED));
+	fWindowTitle->SetToolTip(B_TRANSLATE(
+		"The pattern specifying the window titles. The following placeholders\n"
+		"can be used:\n"
+		"\t%d\t-\tThe current working directory of the active process in the.\n"
+		"\t\t\tcurrent tab. Optionally the maximum number of path components\n"
+		"\t\t\tcan be specified. E.g. '%2d' for at most two components.\n"
+		"\t%i\t-\tThe index of the window.\n"
+		"\t%p\t-\tThe name of the active process in the current tab.\n"
+		"\t%t\t-\tThe title of the current tab.\n"
+		"\t%%\t-\tThe character '%'."));
+
 	BLayoutBuilder::Group<>(this)
 		.SetInsets(5, 5, 5, 5)
 		.AddGrid(5, 5)
-			.Add(fFont->CreateLabelLayoutItem(), 0, 0)
-			.Add(fFont->CreateMenuBarLayoutItem(), 1, 0)
-			.Add(fFontSize->CreateLabelLayoutItem(), 0, 1)
-			.Add(fFontSize->CreateMenuBarLayoutItem(), 1, 1)
-			.Add(fColorSchemaField->CreateLabelLayoutItem(), 0, 2)
-			.Add(fColorSchemaField->CreateMenuBarLayoutItem(), 1, 2)
-			.Add(fColorField->CreateLabelLayoutItem(), 0, 3)
-			.Add(fColorField->CreateMenuBarLayoutItem(), 1, 3)
+			.AddTextControl(fTabTitle, 0, 0, B_ALIGN_RIGHT)
+			.AddTextControl(fWindowTitle, 0, 1, B_ALIGN_RIGHT)
+			.Add(fFont->CreateLabelLayoutItem(), 0, 2)
+			.Add(fFont->CreateMenuBarLayoutItem(), 1, 2)
+			.Add(fFontSize->CreateLabelLayoutItem(), 0, 3)
+			.Add(fFontSize->CreateMenuBarLayoutItem(), 1, 3)
+			.Add(fColorSchemaField->CreateLabelLayoutItem(), 0, 4)
+			.Add(fColorSchemaField->CreateMenuBarLayoutItem(), 1, 4)
+			.Add(fColorField->CreateLabelLayoutItem(), 0, 5)
+			.Add(fColorField->CreateMenuBarLayoutItem(), 1, 5)
 			.End()
 		.AddGlue()
 		.Add(fColorControl = new BColorControl(BPoint(10, 10),
@@ -128,6 +159,9 @@ AppearancePrefView::AppearancePrefView(const char* name,
 	fColorField->SetAlignment(B_ALIGN_RIGHT);
 	fColorSchemaField->SetAlignment(B_ALIGN_RIGHT);
 
+	fTabTitle->SetText(PrefHandler::Default()->getString(PREF_TAB_TITLE));
+	fWindowTitle->SetText(PrefHandler::Default()->getString(PREF_WINDOW_TITLE));
+
 	fColorControl->SetEnabled(false);
 	fColorControl->SetValue(
 		PrefHandler::Default()->getRGB(PREF_TEXT_FORE_COLOR));
@@ -158,6 +192,9 @@ AppearancePrefView::GetPreferredSize(float* _width, float* _height)
 void
 AppearancePrefView::Revert()
 {
+	fTabTitle->SetText(PrefHandler::Default()->getString(PREF_TAB_TITLE));
+	fWindowTitle->SetText(PrefHandler::Default()->getString(PREF_WINDOW_TITLE));
+
 	fWarnOnExit->SetValue(PrefHandler::Default()->getBool(
 		PREF_WARN_ON_EXIT));
 
@@ -175,6 +212,8 @@ AppearancePrefView::Revert()
 void
 AppearancePrefView::AttachedToWindow()
 {
+	fTabTitle->SetTarget(this);
+	fWindowTitle->SetTarget(this);
 	fWarnOnExit->SetTarget(this);
 
 	fFontSize->Menu()->SetTargetForItems(this);
@@ -271,6 +310,30 @@ AppearancePrefView::MessageReceived(BMessage* msg)
 					modified = true;
 			}
 			break;
+
+		case MSG_TAB_TITLE_SETTING_CHANGED:
+		{
+			BString oldValue(PrefHandler::Default()->getString(PREF_TAB_TITLE));
+			if (oldValue != fTabTitle->Text()) {
+				PrefHandler::Default()->setString(PREF_TAB_TITLE,
+					fTabTitle->Text());
+				modified = true;
+			}
+			break;
+		}
+
+		case MSG_WINDOW_TITLE_SETTING_CHANGED:
+		{
+			BString oldValue(PrefHandler::Default()->getString(
+				PREF_WINDOW_TITLE));
+			if (oldValue != fWindowTitle->Text()) {
+				PrefHandler::Default()->setString(PREF_WINDOW_TITLE,
+					fWindowTitle->Text());
+				modified = true;
+			}
+			break;
+		}
+
 		default:
 			BView::MessageReceived(msg);
 			return;

src/apps/terminal/AppearPrefView.h

@@ -13,28 +13,31 @@
 #include <String.h>
 
 
-const ulong MSG_HALF_FONT_CHANGED	= 'mchf';
-const ulong MSG_HALF_SIZE_CHANGED	= 'mchs';
-const ulong MSG_FULL_FONT_CHANGED	= 'mcff';
-const ulong MSG_FULL_SIZE_CHANGED	= 'mcfs';
-const ulong MSG_COLOR_FIELD_CHANGED	= 'mccf';
-const ulong MSG_COLOR_CHANGED		= 'mcbc';
-const ulong MSG_COLOR_SCHEMA_CHANGED		= 'mccs';
+static const uint32 MSG_HALF_FONT_CHANGED				= 'mchf';
+static const uint32 MSG_HALF_SIZE_CHANGED				= 'mchs';
+static const uint32 MSG_FULL_FONT_CHANGED				= 'mcff';
+static const uint32 MSG_FULL_SIZE_CHANGED				= 'mcfs';
+static const uint32 MSG_COLOR_FIELD_CHANGED				= 'mccf';
+static const uint32 MSG_COLOR_CHANGED					= 'mcbc';
+static const uint32 MSG_COLOR_SCHEMA_CHANGED			= 'mccs';
 
-const ulong MSG_WARN_ON_EXIT_CHANGED	= 'mwec';
-const ulong MSG_COLS_CHANGED            = 'mccl';
-const ulong MSG_ROWS_CHANGED            = 'mcrw';
-const ulong MSG_HISTORY_CHANGED         = 'mhst';
+static const uint32 MSG_TAB_TITLE_SETTING_CHANGED		= 'mtts';
+static const uint32 MSG_WINDOW_TITLE_SETTING_CHANGED	= 'mwts';
+static const uint32 MSG_WARN_ON_EXIT_CHANGED			= 'mwec';
+static const uint32 MSG_COLS_CHANGED					= 'mccl';
+static const uint32 MSG_ROWS_CHANGED					= 'mcrw';
+static const uint32 MSG_HISTORY_CHANGED 				= 'mhst';
 
-const ulong MSG_PREF_MODIFIED		= 'mpmo';
+static const uint32 MSG_PREF_MODIFIED					= 'mpmo';
 
 
 struct color_schema;
+class BCheckBox;
 class BColorControl;
 class BMenu;
 class BMenuField;
 class BPopUpMenu;
-class BCheckBox;
+class BTextControl;
 
 
 class AppearancePrefView : public BGroupView {
@@ -76,6 +79,9 @@ private:
 			BMenuField*			fColorField;
 			BColorControl*		fColorControl;
 
+			BTextControl*		fTabTitle;
+			BTextControl*		fWindowTitle;
+
 			BMessenger			fTerminalMessenger;
 };
 

src/apps/terminal/Jamfile

@@ -17,6 +17,7 @@ Application Terminal :
 	Globals.cpp
 	HistoryBuffer.cpp
 	InlineInput.cpp
+	PatternEvaluator.cpp
 	PrefHandler.cpp
 	PrefWindow.cpp
 	Shell.cpp
@@ -29,6 +30,7 @@ Application Terminal :
 	TermScrollView.cpp
 	TermView.cpp
 	TermWindow.cpp
+	TitlePlaceholderMapper.cpp
 	VTKeyTbl.c
 	VTPrsTbl.c
 	: be $(HAIKU_LOCALE_LIBS) tracker textencoding $(TARGET_LIBSUPC++)

src/apps/terminal/PatternEvaluator.cpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "PatternEvaluator.h"
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+
+// #pragma mark - PatternEvaluator
+
+
+/*static*/ BString
+PatternEvaluator::Evaluate(const char* pattern, PlaceholderMapper& mapper)
+{
+	BString result;
+
+	while (*pattern != '\0') {
+		// find next placeholder
+		const char* placeholder = strchr(pattern, '%');
+		if (placeholder == NULL)
+			return result.Append(pattern);
+
+		// append skipped chars
+		if (placeholder != pattern)
+			result.Append(pattern, placeholder - pattern);
+
+		pattern = placeholder + 1;
+
+		// check for an escaped '%'
+		if (*pattern == '%') {
+			result += '%';
+			pattern++;
+			continue;
+		}
+
+		// parse a number, if there is one
+		int64 number = 0;
+		bool hasNumber = false;
+		if (isdigit(*pattern)) {
+			char* numberEnd;
+			number = strtoll(pattern, &numberEnd, 10);
+			pattern = numberEnd;
+			hasNumber = true;
+		}
+
+		BString mappedValue;
+		if (*pattern != '\0' && mapper.MapPlaceholder(*pattern,
+				number, hasNumber, mappedValue)) {
+			// mapped successfully -- append the replacement string
+			result += mappedValue;
+			pattern++;
+		} else {
+			// something went wrong -- just append the literal part of the
+			// pattern
+			result.Append(placeholder, pattern - placeholder);
+		}
+	}
+
+	return result;
+}
+
+
+
+// #pragma mark - PlaceholderMapper
+
+
+PatternEvaluator::PlaceholderMapper::~PlaceholderMapper()
+{
+}

src/apps/terminal/PatternEvaluator.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef PATTERN_EVALUATOR_H
+#define PATTERN_EVALUATOR_H
+
+
+#include <String.h>
+
+
+class PatternEvaluator {
+public:
+	class PlaceholderMapper;
+
+public:
+	static	BString				Evaluate(const char* pattern,
+									PlaceholderMapper& mapper);
+
+};
+
+
+class PatternEvaluator::PlaceholderMapper {
+public:
+	virtual						~PlaceholderMapper();
+
+	virtual	bool				MapPlaceholder(char placeholder,
+									int64 number, bool numberGiven,
+									BString& _string) = 0;
+};
+
+
+#endif	// PATTERN_EVALUATOR_H

src/apps/terminal/PrefHandler.cpp

@@ -57,6 +57,8 @@ static const pref_defaults kTermDefaults[] = {
 	{ PREF_GUI_LANGUAGE,		"English"},
 	{ PREF_IM_AWARE,			"0"},
 
+	{ PREF_TAB_TITLE,			"%1d: %p" },
+	{ PREF_WINDOW_TITLE,		"Terminal %i: %t" },
 	{ PREF_WARN_ON_EXIT,		PREF_TRUE },
 
 	{ NULL, NULL},

src/apps/terminal/TermApp.cpp

@@ -59,6 +59,7 @@ main()
 TermApp::TermApp()
 	: BApplication(TERM_SIGNATURE),
 	fStartFullscreen(false),
+	fWindowTitleUserDefined(false),
 	fWindowNumber(-1),
 	fTermWindow(NULL),
 	fArgs(NULL)
@@ -222,8 +223,10 @@ TermApp::ArgvReceived(int32 argc, char **argv)
 		return;
 	}
 
-	if (fArgs->Title() != NULL)
+	if (fArgs->Title() != NULL) {
 		fWindowTitle = fArgs->Title();
+		fWindowTitleUserDefined = true;
+	}
 
 	fStartFullscreen = fArgs->FullScreen();
 }
@@ -361,8 +364,8 @@ status_t
 TermApp::_MakeTermWindow(BRect &frame, uint32 workspaces)
 {
 	try {
-		fTermWindow = new TermWindow(frame, fWindowTitle.String(), workspaces,
-			fArgs);
+		fTermWindow = new TermWindow(frame, fWindowTitle,
+			fWindowTitleUserDefined, fWindowNumber, workspaces, fArgs);
 	} catch (int error) {
 		return (status_t)error;
 	} catch (...) {

src/apps/terminal/TermApp.h

@@ -85,6 +85,7 @@ private:
 private:
 			bool				fStartFullscreen;
 			BString				fWindowTitle;
+			bool				fWindowTitleUserDefined;
 			int32				fWindowNumber;
 
 			BWindow*			fTermWindow;

src/apps/terminal/TermConst.h

@@ -131,6 +131,9 @@ static const char* const PREF_GUI_LANGUAGE = "Language";
 
 static const char* const PREF_WARN_ON_EXIT = "Warn on exit";
 
+static const char* const PREF_TAB_TITLE = "Tab title";
+static const char* const PREF_WINDOW_TITLE = "Window title";
+
 // Color type
 enum {
   TEXT_FOREGROUND_COLOR,

src/apps/terminal/TermWindow.cpp

@@ -44,6 +44,7 @@
 #include "TermConst.h"
 #include "TermScrollView.h"
 #include "TermView.h"
+#include "TitlePlaceholderMapper.h"
 
 
 const static int32 kMaxTabs = 6;
@@ -55,6 +56,7 @@ const static uint32 kCloseView = 'ClVw';
 const static uint32 kIncreaseFontSize = 'InFs';
 const static uint32 kDecreaseFontSize = 'DcFs';
 const static uint32 kSetActiveTab = 'STab';
+const static uint32 kUpdateTitles = 'UPti';
 
 
 #undef B_TRANSLATE_CONTEXT
@@ -100,8 +102,7 @@ private:
 
 struct TermWindow::Session {
 	int32					id;
-	BString					name;
-	BString					windowTitle;
+	Title					title;
 	TermViewContainerView*	containerView;
 
 	Session(int32 id, TermViewContainerView* containerView)
@@ -109,8 +110,9 @@ struct TermWindow::Session {
 		id(id),
 		containerView(containerView)
 	{
-		name = B_TRANSLATE("Shell ");
-		name << id;
+		title.title = B_TRANSLATE("Shell ");
+		title.title << id;
+		title.patternUserDefined = false;
 	}
 };
 
@@ -140,12 +142,14 @@ private:
 };
 
 
-TermWindow::TermWindow(BRect frame, const char* title, uint32 workspaces,
+TermWindow::TermWindow(BRect frame, const BString& title,
+	bool isUserDefinedTitle, int32 windowIndex, uint32 workspaces,
 	Arguments* args)
 	:
 	BWindow(frame, title, B_DOCUMENT_WINDOW,
 		B_CURRENT_WORKSPACE | B_QUIT_ON_WINDOW_CLOSE, workspaces),
-	fInitialTitle(title),
+	fWindowIndex(windowIndex),
+	fTitleUpdateRunner(this, BMessage(kUpdateTitles), 1000000),
 	fTabView(NULL),
 	fMenubar(NULL),
 	fFilemenu(NULL),
@@ -166,6 +170,12 @@ TermWindow::TermWindow(BRect frame, const char* title, uint32 workspaces,
 	fMatchWord(false),
 	fFullScreen(false)
 {
+	// apply the title settings
+	fTitle.title = title;
+	fTitle.pattern = title;
+	fTitle.patternUserDefined = isUserDefinedTitle;
+	_TitleSettingsChanged();
+
 	_InitWindow();
 	_AddTab(args);
 }
@@ -189,15 +199,13 @@ TermWindow::~TermWindow()
 
 
 void
-TermWindow::SetSessionWindowTitle(TermView* termView, const char* title)
+TermWindow::SetSessionTitle(TermView* termView, const char* title)
 {
 	int32 index = _IndexOfTermView(termView);
 	if (Session* session = (Session*)fSessions.ItemAt(index)) {
-		session->windowTitle = title;
-		BTab* tab = fTabView->TabAt(index);
-		tab->SetLabel(session->windowTitle.String());
-		if (index == fTabView->Selection())
-			SetTitle(session->windowTitle.String());
+		session->title.pattern = title;
+		session->title.patternUserDefined = true;
+		_UpdateSessionTitle(index);
 	}
 }
 
@@ -205,9 +213,7 @@ TermWindow::SetSessionWindowTitle(TermView* termView, const char* title)
 void
 TermWindow::SessionChanged()
 {
-	int32 index = fTabView->Selection();
-	if (Session* session = (Session*)fSessions.ItemAt(index))
-		SetTitle(session->windowTitle.String());
+	_UpdateSessionTitle(fTabView->Selection());
 }
 
 
@@ -509,6 +515,11 @@ TermWindow::MessageReceived(BMessage *message)
 			fPrefWindow = NULL;
 			break;
 
+		case MSG_WINDOW_TITLE_SETTING_CHANGED:
+		case MSG_TAB_TITLE_SETTING_CHANGED:
+			_TitleSettingsChanged();
+			break;
+
 		case MENU_FIND_STRING:
 			if (!fFindPanel) {
 				fFindPanel = new FindWindow(this, fFindString, fFindSelection,
@@ -755,6 +766,10 @@ TermWindow::MessageReceived(BMessage *message)
 			break;
 		}
 
+		case kUpdateTitles:
+			_UpdateTitles();
+			break;
+
 		default:
 			BWindow::MessageReceived(message);
 			break;
@@ -870,7 +885,6 @@ TermWindow::_AddTab(Arguments* args, const BString& currentDirectory)
 			fTabView->SetScrollView(scrollView);
 
 		Session* session = new Session(_NewSessionID(), containerView);
-		session->windowTitle = fInitialTitle;
 		fSessions.AddItem(session);
 
 		BFont font;
@@ -905,10 +919,6 @@ TermWindow::_AddTab(Arguments* args, const BString& currentDirectory)
 
 		BTab* tab = new BTab;
 		fTabView->AddTab(scrollView, tab);
-		tab->SetLabel(session->name.String());
-			// TODO: Use a better name. For example, do like MacOS X's Terminal
-			// and update the title using the last executed command ?
-			// Or like Gnome's Terminal and use the current path ?
 		view->SetScrollBar(scrollView->ScrollBar(B_VERTICAL));
 		view->SetMouseClipboard(gMouseClipboard);
 		view->SetEncoding(EncodingID(
@@ -916,8 +926,10 @@ TermWindow::_AddTab(Arguments* args, const BString& currentDirectory)
 
 		_SetTermColors(containerView);
 
-		// TODO: No fTabView->Select(tab); ?
-		fTabView->Select(fTabView->CountTabs() - 1);
+		int32 tabIndex = fTabView->CountTabs() - 1;
+		fTabView->Select(tabIndex);
+
+		_UpdateSessionTitle(tabIndex);
 	} catch (...) {
 		// most probably out of memory. That's bad.
 		// TODO: Should cleanup, I guess
@@ -1096,6 +1108,72 @@ TermWindow::_MakeWindowSizeMenu()
 }
 
 
+void
+TermWindow::_TitleSettingsChanged()
+{
+	if (!fTitle.patternUserDefined)
+		fTitle.pattern = PrefHandler::Default()->getString(PREF_WINDOW_TITLE);
+
+	fSessionTitlePattern = PrefHandler::Default()->getString(PREF_TAB_TITLE);
+
+	_UpdateTitles();
+}
+
+
+void
+TermWindow::_UpdateTitles()
+{
+	int32 sessionCount = fSessions.CountItems();
+	for (int32 i = 0; i < sessionCount; i++)
+		_UpdateSessionTitle(i);
+}
+
+
+void
+TermWindow::_UpdateSessionTitle(int32 index)
+{
+	Session* session = (Session*)fSessions.ItemAt(index);
+	if (session == NULL)
+		return;
+
+	// get the active process info
+	ActiveProcessInfo activeProcessInfo;
+	if (!_TermViewAt(index)->GetActiveProcessInfo(activeProcessInfo))
+		return;
+
+	// evaluate the session title pattern
+	BString sessionTitlePattern = session->title.patternUserDefined
+		? session->title.pattern : fSessionTitlePattern;
+	TabTitlePlaceholderMapper tabMapper(activeProcessInfo, session->id);
+	const BString& sessionTitle = PatternEvaluator::Evaluate(
+		sessionTitlePattern, tabMapper);
+
+	// set the tab title
+	if (sessionTitle != session->title.title) {
+		session->title.title = sessionTitle;
+		BTab* tab = fTabView->TabAt(index);
+		tab->SetLabel(session->title.title);
+		fTabView->Invalidate(fTabView->TabFrame(index));
+	}
+
+	// If this is the active tab, also recompute the window title.
+	if (index != fTabView->Selection())
+		return;
+
+	// evaluate the window title pattern
+	WindowTitlePlaceholderMapper windowMapper(activeProcessInfo, fWindowIndex,
+		sessionTitle);
+	const BString& windowTitle = PatternEvaluator::Evaluate(fTitle.pattern,
+		windowMapper);
+
+	// set the window title
+	if (windowTitle != fTitle.title) {
+		fTitle.title = windowTitle;
+		SetTitle(fTitle.title);
+	}
+}
+
+
 int32
 TermWindow::_NewSessionID()
 {
@@ -1152,6 +1230,6 @@ CustomTermView::NotifyQuit(int32 reason)
 void
 CustomTermView::SetTitle(const char* title)
 {
-	dynamic_cast<TermWindow*>(Window())->SetSessionWindowTitle(this, title);
+	dynamic_cast<TermWindow*>(Window())->SetSessionTitle(this, title);
 }
 

src/apps/terminal/TermWindow.h

@@ -32,6 +32,7 @@
 #define TERM_WINDOW_H
 
 
+#include <MessageRunner.h>
 #include <String.h>
 #include <Window.h>
 
@@ -49,11 +50,12 @@ class TermViewContainerView;
 
 class TermWindow : public BWindow {
 public:
-								TermWindow(BRect frame, const char* title,
+								TermWindow(BRect frame, const BString& title,
+									bool isUserDefinedTitle, int32 windowIndex,
 									uint32 workspaces, Arguments* args);
 	virtual						~TermWindow();
 
-			void				SetSessionWindowTitle(TermView* termView,
+			void				SetSessionTitle(TermView* termView,
 									const char* title);
 			void				SessionChanged();
 
@@ -66,6 +68,12 @@ protected:
 	virtual void				FrameResized(float newWidth, float newHeight);
 
 private:
+			struct Title {
+				BString			title;
+				BString			pattern;
+				bool			patternUserDefined;
+			};
+
 			struct Session;
 			class TabView;
 			friend class TabView;
@@ -92,10 +100,18 @@ private:
 			void				_CheckChildren();
 			void				_ResizeView(TermView* view);
 
+			void				_TitleSettingsChanged();
+			void				_UpdateTitles();
+			void				_UpdateSessionTitle(int32 index);
+
 			int32				_NewSessionID();
 
 private:
-			BString				fInitialTitle;
+			Title				fTitle;
+			BString				fSessionTitlePattern;
+			int32				fWindowIndex;
+			BMessageRunner		fTitleUpdateRunner;
+
 			BList				fSessions;
 
 			TabView*			fTabView;

src/apps/terminal/TitlePlaceholderMapper.cpp

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "TitlePlaceholderMapper.h"
+
+
+// #pragma mark - TitlePlaceholderMapper
+
+
+TitlePlaceholderMapper::TitlePlaceholderMapper(
+	const ActiveProcessInfo& processInfo)
+	:
+	fProcessInfo(processInfo)
+{
+}
+
+
+#include <stdio.h>
+bool
+TitlePlaceholderMapper::MapPlaceholder(char placeholder, int64 number,
+	bool numberGiven, BString& _string)
+{
+	switch (placeholder) {
+		case 'd':
+		{
+			// current working directory
+
+			// If a number is given, extract the respective number of rightmost
+			// components.
+			BString directory(fProcessInfo.CurrentDirectory());
+			if (numberGiven && number > 0) {
+				int32 index = directory.Length();
+				while (number > 0 && index > 0) {
+					 index = directory.FindLast('/', index - 1);
+					 number--;
+				}
+
+				if (index >= 0 && index + 1 < directory.Length())
+					directory.Remove(0, index + 1);
+			}
+
+			_string = directory;
+			return true;
+		}
+
+		case 'p':
+			// process name
+			_string = fProcessInfo.Name();
+			return true;
+	}
+
+	return false;
+}
+
+
+// #pragma mark - WindowTitlePlaceholderMapper
+
+
+WindowTitlePlaceholderMapper::WindowTitlePlaceholderMapper(
+	const ActiveProcessInfo& processInfo, int32 windowIndex,
+	const BString& tabTitle)
+	:
+	TitlePlaceholderMapper(processInfo),
+	fWindowIndex(windowIndex),
+	fTabTitle(tabTitle)
+{
+}
+
+
+bool
+WindowTitlePlaceholderMapper::MapPlaceholder(char placeholder, int64 number,
+	bool numberGiven, BString& _string)
+{
+	switch (placeholder) {
+		case 'i':
+			// window index
+			_string.Truncate(0);
+			_string << fWindowIndex;
+			return true;
+
+		case 't':
+			// the tab title
+			_string = fTabTitle;
+			return true;
+	}
+
+	return TitlePlaceholderMapper::MapPlaceholder(placeholder, number,
+		numberGiven, _string);
+}
+
+
+// #pragma mark - TabTitlePlaceholderMapper
+
+
+TabTitlePlaceholderMapper::TabTitlePlaceholderMapper(
+	const ActiveProcessInfo& processInfo, int32 tabIndex)
+	:
+	TitlePlaceholderMapper(processInfo),
+	fTabIndex(tabIndex)
+{
+}
+
+
+bool
+TabTitlePlaceholderMapper::MapPlaceholder(char placeholder, int64 number,
+	bool numberGiven, BString& _string)
+{
+	switch (placeholder) {
+		case 'i':
+			// tab index
+			_string.Truncate(0);
+			_string << fTabIndex;
+			return true;
+	}
+
+	return TitlePlaceholderMapper::MapPlaceholder(placeholder, number,
+		numberGiven, _string);
+}

src/apps/terminal/TitlePlaceholderMapper.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef TITLE_PLACEHOLDER_MAPPER_H
+#define TITLE_PLACEHOLDER_MAPPER_H
+
+
+#include "ActiveProcessInfo.h"
+#include "PatternEvaluator.h"
+
+
+/*! Class mapping the placeholders common for window and tab titles.
+ */
+class TitlePlaceholderMapper : public PatternEvaluator::PlaceholderMapper {
+public:
+								TitlePlaceholderMapper(
+									const ActiveProcessInfo& processInfo);
+
+	virtual	bool				MapPlaceholder(char placeholder,
+									int64 number, bool numberGiven,
+									BString& _string);
+
+private:
+			ActiveProcessInfo	fProcessInfo;
+};
+
+
+class WindowTitlePlaceholderMapper : public TitlePlaceholderMapper {
+public:
+								WindowTitlePlaceholderMapper(
+									const ActiveProcessInfo& processInfo,
+									int32 windowIndex, const BString& tabTitle);
+
+	virtual	bool				MapPlaceholder(char placeholder,
+									int64 number, bool numberGiven,
+									BString& _string);
+
+private:
+			int32				fWindowIndex;
+			BString				fTabTitle;
+};
+
+
+class TabTitlePlaceholderMapper : public TitlePlaceholderMapper {
+public:
+								TabTitlePlaceholderMapper(
+									const ActiveProcessInfo& processInfo,
+									int32 tabIndex);
+
+	virtual	bool				MapPlaceholder(char placeholder,
+									int64 number, bool numberGiven,
+									BString& _string);
+
+private:
+			int32				fTabIndex;
+};
+
+
+#endif	// TITLE_PLACEHOLDER_MAPPER_H