WebPositive: add a bookmark bar.

* This is a BMenuBar with IconMenuItems.
* Uses node monitoring to live-update the bar as bookmarks are modified.
* Bookmark folders are BNavMenus and can be browsed.
* This needs some improvements, for example handling more bookmarks than
the window width allows us to show (with an extra menu like for tabs?)

Fixes #10232.

src/apps/webpositive/BrowserWindow.cpp

@@ -47,6 +47,7 @@
 #include <GridLayoutBuilder.h>
 #include <GroupLayout.h>
 #include <GroupLayoutBuilder.h>
+#include <IconMenuItem.h>
 #include <Keymap.h>
 #include <LayoutBuilder.h>
 #include <Locale.h>
@@ -55,6 +56,7 @@
 #include <MenuItem.h>
 #include <MessageRunner.h>
 #include <NodeInfo.h>
+#include <NodeMonitor.h>
 #include <Path.h>
 #include <Roster.h>
 #include <Screen.h>
@@ -66,6 +68,7 @@
 #include <TextControl.h>
 #include <UnicodeChar.h>
 
+#include <map>
 #include <stdio.h>
 
 #include "AuthenticationPanel.h"
@@ -172,6 +175,142 @@ private:
 };
 
 
+class BookmarkBar: public BMenuBar {
+public:
+	BookmarkBar(const char* title, BHandler* target, const entry_ref* navDir)
+		: BMenuBar(title)
+	{
+		BEntry(navDir).GetNodeRef(&fNodeRef);
+	}
+
+	~BookmarkBar()
+	{
+		stop_watching(BMessenger(this));
+	}
+
+	void AttachedToWindow()
+	{
+		BMenuBar::AttachedToWindow();
+		watch_node(&fNodeRef, B_WATCH_DIRECTORY, BMessenger(this));
+
+		// Enumerate initial directory content
+		BDirectory dir(&fNodeRef);
+		BEntry bookmark;
+		while(dir.GetNextEntry(&bookmark) == B_OK) {
+			node_ref ref;
+			bookmark.GetNodeRef(&ref);
+			AddItem(ref.node, &bookmark);
+		}
+	}
+
+	void MessageReceived(BMessage* message)
+	{
+		switch(message->what) {
+			case B_NODE_MONITOR:
+				int32 opcode = message->FindInt32("opcode");
+				ino_t inode = message->FindInt64("node");
+				switch(opcode) {
+					case B_ENTRY_CREATED:
+					{
+						entry_ref ref;
+						const char *name;
+
+						message->FindInt32("device", &ref.device);
+						message->FindInt64("directory", &ref.directory);
+						message->FindString("name", &name);
+						ref.set_name(name);
+
+						BEntry entry(&ref);
+						AddItem(inode, &entry);
+						break;
+					}
+					case B_ENTRY_MOVED:
+					{
+						if (fItemsMap[inode] == NULL)
+						{
+							entry_ref ref;
+							const char *name;
+
+							message->FindInt32("device", &ref.device);
+							message->FindInt64("to directory", &ref.directory);
+							message->FindString("name", &name);
+							ref.set_name(name);
+
+							BEntry entry(&ref);
+							AddItem(inode, &entry);
+							break;
+						} else {
+							// Existing item. Check if it's a rename or a move
+							// to some other folder.
+							ino_t from, to;
+							message->FindInt64("to directory", &to);
+							message->FindInt64("from directory", &from);
+							if (from == to)
+							{
+								const char *name;
+								message->FindString("name", &name);
+								fItemsMap[inode]->SetLabel(name);
+								break;
+							}
+						}
+
+						// fall through: the item was moved from here to
+						// elsewhere, remove it from the bar.
+					}
+					case B_ENTRY_REMOVED:
+					{
+						IconMenuItem* item = fItemsMap[inode];
+						RemoveItem(item);
+						fItemsMap.erase(inode);
+						delete item;
+					}
+				}
+				return;
+		}
+
+		BMenuBar::MessageReceived(message);
+	}
+
+private:
+	void AddItem(ino_t inode, BEntry* entry)
+	{
+		char name[B_FILE_NAME_LENGTH];
+		entry->GetName(name);
+
+		// make sure the item doesn't already exists
+		if (fItemsMap[inode] != NULL)
+			return;
+		
+		entry_ref ref;
+		entry->GetRef(&ref);
+
+		IconMenuItem* item = NULL;
+
+		if(entry->IsDirectory()) {
+			BNavMenu* menu = new BNavMenu(name, B_REFS_RECEIVED, Window());
+			menu->SetNavDir(&ref);
+			item = new IconMenuItem(menu, NULL,
+				"application/x-vnd.Be-directory", B_MINI_ICON);
+
+		} else {
+			BNode node(entry);
+			BNodeInfo info(&node);
+
+			BMessage* message = new BMessage(B_REFS_RECEIVED);
+			message->AddRef("refs", &ref);
+			item = new IconMenuItem(name, message, &info,
+				B_MINI_ICON);
+		}
+
+		BMenuBar::AddItem(item);
+		fItemsMap[inode] = item;
+	}
+
+	node_ref fNodeRef;
+	std::map<ino_t, IconMenuItem*> fItemsMap;
+};
+
+
 class PageUserData : public BWebView::UserData {
 public:
 	PageUserData(BView* focusedView)
@@ -581,6 +720,8 @@ BrowserWindow::BrowserWindow(BRect frame, SettingsMessage* appSettings,
 #if !INTEGRATE_MENU_INTO_TAB_BAR
 		.Add(menuBarGroup)
 #endif
+		.Add(new BookmarkBar(B_TRANSLATE("Bookmarks"), this,
+			&bookmarkRef))
 		.Add(fTabManager->TabGroup())
 		.Add(navigationGroup)
 		.Add(fTabManager->ContainerView())