/*
 *  Printers Preference Application.
 *  Copyright (C) 2001, 2002 OpenBeOS. All Rights Reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "PrinterListView.h"
#include "pr_server.h"

#include "Messages.h"
#include "Globals.h"
#include "PrintersWindow.h"
#include "SpoolFolder.h"

#include <Messenger.h>
#include <Bitmap.h>
#include <String.h>
#include <Alert.h>
#include <Mime.h>
#include <StorageKit.h>

// Implementation of PrinterListView

PrinterListView::PrinterListView(BRect frame)
	: Inherited(frame, "printers_list", B_SINGLE_SELECTION_LIST, B_FOLLOW_ALL)
	, fFolder(NULL)
{
}

void PrinterListView::BuildPrinterList() {	
		// clear list
	const BListItem** items = Items();
	for (int32 i = CountItems()-1; i >= 0; i --) {
		delete items[i];
	}
	MakeEmpty();

		// TODO: Fixup situation in which PrintServer is not running	
	BEntry entry;
	status_t rc;
	BPath path;
	
		// Find directory containing printer definition nodes
	if ((rc=::find_directory(B_USER_PRINTERS_DIRECTORY, &path)) == B_OK) {
		BDirectory dir(path.Path());
		
			// Can we reach the directory?
		if ((rc = dir.InitCheck()) == B_OK) {
			fNode = dir;
				// Yes, so loop over it's entries
			while((rc = dir.GetNextEntry(&entry)) == B_OK) {
				BDirectory printer(&entry);
				AddPrinter(printer);
			}
		}
	}
}

void PrinterListView::AttachedToWindow()
{
	Inherited::AttachedToWindow();

	SetSelectionMessage(new BMessage(MSG_PRINTER_SELECTED));
	SetInvocationMessage(new BMessage(MSG_MKDEF_PRINTER));
	SetTarget(Window());	

	BuildPrinterList();

		// Select active printer
	for (int32 i = 0; i < CountItems(); i ++) {
		PrinterItem* item = dynamic_cast<PrinterItem*>(ItemAt(i));
		if (item->IsActivePrinter()) {
			Select(i); break;
		}
	}

	BPath path;	
	if (find_directory(B_USER_PRINTERS_DIRECTORY, &path) == B_OK) {
		BDirectory dir(path.Path());
		if (dir.InitCheck() == B_OK) {
			fFolder = new FolderWatcher(this->Window(), dir, true);
			fFolder->SetListener(this);
		}
	}	
}

bool PrinterListView::QuitRequested() {
	delete fFolder; fFolder = NULL;
	return true;
}

void PrinterListView::AddPrinter(BDirectory& printer) {
	BString state;
	node_ref node;
		// If the entry is a directory
	if (printer.InitCheck() == B_OK && 
		printer.GetNodeRef(&node) == B_OK &&
		FindItem(&node) == NULL &&
		printer.ReadAttrString(PSRV_PRINTER_ATTR_STATE, &state) == B_OK &&
		state == "free") {
			// Check it's Mime type for a spool director
		BNodeInfo info(&printer);
		char buffer[256];
		
		if (info.GetType(buffer) == B_OK &&
			strcmp(buffer, PSRV_PRINTER_FILETYPE) == 0) {
				// Yes, it is a printer definition node
			AddItem(new PrinterItem(dynamic_cast<PrintersWindow*>(Window()), printer));
		}
	}
}

PrinterItem* PrinterListView::FindItem(node_ref* node) {
	for (int32 i = CountItems()-1; i >= 0; i --) {
		PrinterItem* item = dynamic_cast<PrinterItem*>(ItemAt(i));
		node_ref ref;
		if (item && item->Node()->GetNodeRef(&ref) == B_OK && ref == *node) {
			return item;
		}
	}
	return NULL;
}

void PrinterListView::EntryCreated(node_ref* node, entry_ref* entry) {
	BDirectory printer(node);
	AddPrinter(printer);
}

void PrinterListView::EntryRemoved(node_ref* node) {
	PrinterItem* item = FindItem(node);
	if (item) {
		RemoveItem(item);
		delete item;
	}
}

void PrinterListView::AttributeChanged(node_ref* node) {
	BDirectory printer(node);
	AddPrinter(printer);
}

void PrinterListView::UpdateItem(PrinterItem* item) {
	item->UpdatePendingJobs();
	InvalidateItem(IndexOf(item));
}

PrinterItem* PrinterListView::SelectedItem() {
	BListItem* item = ItemAt(CurrentSelection());
	return dynamic_cast<PrinterItem*>(item);
}

BBitmap* PrinterItem::sIcon = NULL;
BBitmap* PrinterItem::sSelectedIcon = NULL;

PrinterItem::PrinterItem(PrintersWindow* window, const BDirectory& node)
	: BListItem(0, false)
	, fFolder(NULL)
	, fNode(node)
{
	if (sIcon == NULL)
	{
		sIcon = new BBitmap(BRect(0,0,B_LARGE_ICON-1,B_LARGE_ICON-1), B_CMAP8);
		BMimeType type(PSRV_PRINTER_FILETYPE);
		type.GetIcon(sIcon, B_LARGE_ICON);
	}

	if (sSelectedIcon == NULL)
	{
		sSelectedIcon = new BBitmap(BRect(0,0,B_LARGE_ICON-1,B_LARGE_ICON-1), B_CMAP8);
		BMimeType type(PRNT_SIGNATURE_TYPE);
		type.GetIcon(sSelectedIcon, B_LARGE_ICON);
	}

		// Get Name of printer
	GetStringProperty(PSRV_PRINTER_ATTR_PRT_NAME, fName);
	GetStringProperty(PSRV_PRINTER_ATTR_COMMENTS, fComments);
	GetStringProperty(PSRV_PRINTER_ATTR_TRANSPORT, fTransport);
	GetStringProperty(PSRV_PRINTER_ATTR_DRV_NAME, fDriverName);

	BPath path;
		// Setup spool folder
	if (find_directory(B_USER_PRINTERS_DIRECTORY, &path) == B_OK) {
		path.Append(fName.String());
		BDirectory dir(path.Path());
		if (dir.InitCheck() != B_OK) return;
		fFolder = new SpoolFolder(window, this, dir);
	}
	UpdatePendingJobs();
}

PrinterItem::~PrinterItem() {
	delete fFolder; fFolder = NULL;
}

void PrinterItem::GetStringProperty(const char* propName, BString& outString)
{
	fNode.ReadAttrString(propName, &outString);
}

void PrinterItem::Update(BView *owner, const BFont *font)
{
	BListItem::Update(owner,font);
	
	font_height height;
	font->GetHeight(&height);
	
	SetHeight( (height.ascent+height.descent+height.leading) * 3.0 +4 );
}

bool PrinterItem::Remove(BListView* view)
{
	BMessenger msgr;
	
	if (GetPrinterServerMessenger(msgr) == B_OK)
	{
		BMessage script(B_DELETE_PROPERTY);
		BMessage reply;
	
		script.AddSpecifier("Printer", view->IndexOf(this));	
	
		if (msgr.SendMessage(&script,&reply) == B_OK) {
			return true;
		}
	}
	return false;
}

void PrinterItem::DrawItem(BView *owner, BRect /*bounds*/, bool complete)
{
	BListView* list = dynamic_cast<BListView*>(owner);
	if (list)
	{
		font_height height;
		BFont font;
		owner->GetFont(&font);
		font.GetHeight(&height);
		float fntheight = height.ascent+height.descent+height.leading;

		BRect bounds = list->ItemFrame(list->IndexOf(this));
		
		rgb_color color = owner->ViewColor();
		if ( IsSelected() ) 
			color = tint_color(color, B_HIGHLIGHT_BACKGROUND_TINT);
								
		rgb_color oldviewcolor = owner->ViewColor();
		rgb_color oldlowcolor = owner->LowColor();
		rgb_color oldcolor = owner->HighColor();
		owner->SetViewColor( color );
		owner->SetHighColor( color );
		owner->SetLowColor( color );
		owner->FillRect(bounds);
		owner->SetLowColor( oldlowcolor );
		owner->SetHighColor( oldcolor );

		BPoint iconPt = bounds.LeftTop() + BPoint(2,2);
		BPoint namePt = iconPt + BPoint(B_LARGE_ICON+8, fntheight);
		BPoint driverPt = iconPt + BPoint(B_LARGE_ICON+8, fntheight*2);
		BPoint commentPt = iconPt + BPoint(B_LARGE_ICON+8, fntheight*3);
		
		float width = owner->StringWidth("No pending jobs.");
		BPoint pendingPt(bounds.right - width -8, namePt.y);
		BPoint transportPt(bounds.right - width -8, driverPt.y);
		
		drawing_mode mode = owner->DrawingMode();
		owner->SetDrawingMode(B_OP_OVER);
			owner->DrawBitmap(IsActivePrinter() ? sSelectedIcon : sIcon, iconPt);
		
			// left of item
		owner->DrawString(fName.String(), fName.Length(), namePt);
		owner->DrawString(fDriverName.String(), fDriverName.Length(), driverPt);
		owner->DrawString(fComments.String(), fComments.Length(), commentPt);
		
			// right of item
		owner->DrawString(fPendingJobs.String(), 16, pendingPt);
		owner->DrawString(fTransport.String(), fTransport.Length(), transportPt);
		
		owner->SetDrawingMode(mode);

		owner->SetViewColor(oldviewcolor);
	}
}

bool PrinterItem::IsActivePrinter()
{
	bool rc = false;
	BMessenger msgr;

	if (::GetPrinterServerMessenger(msgr) == B_OK)
	{
		BMessage reply, getNameOfActivePrinter(B_GET_PROPERTY);
		getNameOfActivePrinter.AddSpecifier("ActivePrinter");
	
		BString activePrinterName;
		if (msgr.SendMessage(&getNameOfActivePrinter, &reply) == B_OK &&
			reply.FindString("result", &activePrinterName) == B_OK) {
				// Compare name of active printer with name of 'this' printer item
			rc = (fName == activePrinterName);
		}
	}

	return rc;	
}

bool PrinterItem::HasPendingJobs() {
	return fFolder && fFolder->CountJobs() > 0;
}

SpoolFolder* PrinterItem::Folder() {
	return fFolder;
}

BDirectory* PrinterItem::Node() {
	return &fNode;
}

void PrinterItem::UpdatePendingJobs() {
	if (fFolder) {
		uint32 pendingJobs = fFolder->CountJobs();
		fPendingJobs = "";
		if (pendingJobs == 1) {
			fPendingJobs = "1 pending job.";
		} else if (pendingJobs > 1) {
			fPendingJobs << pendingJobs << " pending jobs.h";
		}
		if (pendingJobs >= 1) return;
	}
	fPendingJobs = "No pending jobs.";
}