HaikuDepot: Beginnings of supporting filters...

... to reduce the package list. No filters can be defined
  via the UI, but a DepotFilter is already implemented, although
  its performance will probably need to improve.

src/apps/haiku-depot/FilterView.cpp

@@ -16,6 +16,8 @@
 #include <PopUpMenu.h>
 #include <TextControl.h>
 
+#include "Model.h"
+
 
 #undef B_TRANSLATION_CONTEXT
 #define B_TRANSLATION_CONTEXT "FilterView"
@@ -28,7 +30,7 @@ enum {
 };
 
 
-FilterView::FilterView()
+FilterView::FilterView(const Model& model)
 	:
 	BGroupView("filter view")
 {
@@ -36,21 +38,27 @@ FilterView::FilterView()
 	BPopUpMenu* categoryMenu = new BPopUpMenu(B_TRANSLATE("Show"));
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("All packages"), NULL));
 	categoryMenu->AddItem(new BSeparatorItem());
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Audio"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Games"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Graphics"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Development"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Miscellaneous"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Shell"), NULL));
-	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Video"), NULL));
+	
+	const CategoryList& categories = model.Categories();
+	for (int i = 0; i < categories.CountItems(); i++) {
+		const CategoryRef& category = categories.ItemAtFast(i);
+		BMessage* message = new BMessage(MSG_CATEGORY_SELECTED);
+		message->AddString("name", category->Name());
+		BMenuItem* item = new BMenuItem(category->Label(), message);
+		categoryMenu->AddItem(item);
+	}
+	
 	categoryMenu->AddItem(new BSeparatorItem());
+
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Installed packages"),
 		NULL));
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Uninstalled packages"),
 		NULL));
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("User selected packages"),
 		NULL));
+
 	categoryMenu->AddItem(new BSeparatorItem());
+
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Downloading"), NULL));
 	categoryMenu->AddItem(new BMenuItem(B_TRANSLATE("Update available"), NULL));
 	categoryMenu->ItemAt(0)->SetMarked(true);

src/apps/haiku-depot/FilterView.h

@@ -10,11 +10,12 @@
 
 class BMenuField;
 class BTextControl;
+class Model;
 
 
 class FilterView : public BGroupView {
 public:
-								FilterView();
+								FilterView(const Model& model);
 	virtual						~FilterView();
 
 	virtual void				AttachedToWindow();

src/apps/haiku-depot/MainWindow.cpp

@@ -36,7 +36,7 @@ MainWindow::MainWindow(BRect frame)
 	BMenuBar* menuBar = new BMenuBar(B_TRANSLATE("Main Menu"));
 	_BuildMenu(menuBar);
 	
-	fFilterView = new FilterView();
+	fFilterView = new FilterView(fModel);
 	fPackageListView = new PackageListView();
 	fPackageInfoView = new PackageInfoView(&fPackageManager);
 	

src/apps/haiku-depot/Model.cpp

@@ -14,6 +14,55 @@
 #define B_TRANSLATION_CONTEXT "Model"
 
 
+// #pragma mark - PackageFilters
+
+
+PackageFilter::~PackageFilter()
+{
+}
+
+
+class AnyFilter : public PackageFilter {
+public:
+	virtual bool AcceptsPackage(const PackageInfo& package) const
+	{
+		return true;
+	}
+};
+
+
+class DepotFilter : public PackageFilter {
+public:
+	DepotFilter(const DepotInfo& depot)
+		:
+		fDepot(depot)
+	{
+	}
+	
+	virtual bool AcceptsPackage(const PackageInfo& package) const
+	{
+		// TODO: Maybe a PackageInfo ought to know the Depot it came from?
+		// But right now the same package could theoretically be provided
+		// from different depots and the filter would work correctly.
+		// Also the PackageList could actually contain references to packages
+		// instead of the packages as objects. The equal operator is quite
+		// expensive as is.
+		const PackageInfoList& packageList = fDepot.PackageList();
+		for (int i = packageList.CountItems() - 1; i >= 0; i--) {
+			if (packageList.ItemAtFast(i) == package)
+				return true;
+		}
+		return false;
+	}
+	
+private:
+	DepotInfo	fDepot;
+};
+
+
+// #pragma mark - Model
+
+
 Model::Model()
 	:
 	fSearchTerms(),
@@ -36,7 +85,14 @@ Model::Model()
 		B_TRANSLATE("Development"), "development"), true),
 	fCategoryCommandLine(new PackageCategory(
 		BitmapRef(),
-		B_TRANSLATE("Command line"), "command-line"), true)
+		B_TRANSLATE("Command line"), "command-line"), true),
+	fCategoryGames(new PackageCategory(
+		BitmapRef(),
+		B_TRANSLATE("Games"), "games"), true),
+
+	fCategoryFilter(PackageFilterRef(new AnyFilter(), true)),
+	fDepotFilter(PackageFilterRef(new AnyFilter(), true)),
+	fSearchTermsFilter(PackageFilterRef(new AnyFilter(), true))
 {
 	// Don't forget to add new categories to this list:
 	fCategories.Add(fCategoryAudio);
@@ -45,6 +101,7 @@ Model::Model()
 	fCategories.Add(fCategoryProductivity);
 	fCategories.Add(fCategoryDevelopment);
 	fCategories.Add(fCategoryCommandLine);
+	fCategories.Add(fCategoryGames);
 }
 
 
@@ -61,7 +118,12 @@ Model::CreatePackageList() const
 			= fDepots.ItemAtFast(i).PackageList();
 
 		for (int32 j = 0; j < packageList.CountItems(); j++) {
-			resultList.Add(packageList.ItemAtFast(j));
+			const PackageInfo& package = packageList.ItemAtFast(j);
+			if (fCategoryFilter->AcceptsPackage(package)
+				&& fDepotFilter->AcceptsPackage(package)
+				&& fSearchTermsFilter->AcceptsPackage(package)) {
+				resultList.Add(package);
+			}
 		}
 	}
 

src/apps/haiku-depot/Model.h

@@ -9,6 +9,17 @@
 #include "PackageInfo.h"
 
 
+class PackageFilter : public BReferenceable {
+public:
+	virtual						~PackageFilter();
+
+	virtual	bool				AcceptsPackage(
+									const PackageInfo& package) const = 0;
+};
+
+typedef BReference<PackageFilter> PackageFilterRef;
+
+
 class Model {
 public:
 								Model();
@@ -31,6 +42,8 @@ public:
 									{ return fCategoryDevelopment; }
 			const CategoryRef&	CategoryCommandLine() const
 									{ return fCategoryCommandLine; }
+			const CategoryRef&	CategoryGames() const
+									{ return fCategoryGames; }
 
 			const CategoryList&	Categories() const
 									{ return fCategories; }
@@ -46,9 +59,14 @@ private:
 			CategoryRef			fCategoryProductivity;
 			CategoryRef			fCategoryDevelopment;
 			CategoryRef			fCategoryCommandLine;
+			CategoryRef			fCategoryGames;
 			// TODO: More categories
 
 			CategoryList		fCategories;
+
+			PackageFilterRef	fCategoryFilter;
+			PackageFilterRef	fDepotFilter;
+			PackageFilterRef	fSearchTermsFilter;
 };