net.java

监控大型网络的软件。能够自动发现拓扑结构

		// Aktiver scrollbarer
		lnTop.activate();
		lnBottom.activate();

		// Oppdater PopupMenu med liste over mulige vlan
		e = vlanSet.elements();
		vlanMenu.clear();
		vlanMenu.setMenuLabel("View other vlan at "+n.getName());
		com.d("vlanSet size: " + vlanSet.size(), 5);
		while (e.hasMoreElements())
		{
			String vlan = (String)e.nextElement();
			String[] vlanName = (String[])lVlanNames.get(vlan);
			if (vlanName == null) continue;
			Vlan vl = new Vlan(Integer.parseInt(vlan), vlanName[1]);
			com.d("  Added to vlanMenu: " + vlan + " vlanName: " + vlanName[1], 6);
			vlanMenu.addMenuItem(vl);
		}
		vlanMenu.sort();
		vlanMenu.refresh();

		// Hent og legg til last-data
		Hashtable lBoksText = (Hashtable)h.get("listBoksText");
		Hashtable lLinkText = (Hashtable)h.get("listLinkText");
		if (APPLY_LAST_VLANV) {
			applyLast(lBoksText, lLinkText);
		}

		// Så legger vi til tekst for alle bokser
		String[] tList;
		int tcnt=0;
		while ( (tList = (String[])lBoksText.get("t"+tcnt)) != null) {
			String text = tList[1];
			for (int j=2; j < tList.length; j++) {
				String[] data = (String[])lBoksText.get(tList[j]);
				if (data == null) {
					com.d("ERROR in getNettelLinks(), boksid "+tList[j]+" in t"+tcnt+" is not found in list, check vPServer", 2);
					continue;
				}
				Nettel nettel = (Nettel)nh.get(tList[j]);
				if (nettel == null) {
					//com.d("ERROR in getNettelLinks(), could not find boks with id "+tList[j], 2);
					continue;
				}
				nettel.processText(text, data);
			}
			tcnt++;
		}

		com.d("Behandler listRouterLinkText", 2);
		tcnt=0;
		while ( (tList = (String[])lLinkText.get("t"+tcnt)) != null) {
			String text = tList[1];
			for (int j=2; j < tList.length; j++) {
				String[] data = (String[])lLinkText.get(tList[j]);
				if (data == null) {
					com.d("ERROR in getNettelLinks(), linkid "+tList[j]+" in t"+tcnt+" is not found in list, check vPServer", 2);
					continue;
				}
				Link l = (Link)lh.get(tList[j]);
				if (l == null) {
					//com.d("ERROR in getNettelLinks(), could not find link with id "+tList[j], 2);
					continue;
				}
				String pText = l.processText(text, data);
				//com.d("  Added text: " + pText, 6);
			}
			tcnt++;
		}

		com.d("------------------------------------------------------------------------", 1);
	}

	private void setConfig(Hashtable lConfig)
	{
		String[] s = (String[])lConfig.get("vpNetName");
		netName = s[1];

		s = (String[])lConfig.get("vpNetLink");
		netLink = s[1];

		s = (String[])lConfig.get("domainSuffix");
		domainSuffix = s[1];

		s = (String[])lConfig.get("userName");
		if (s != null) com.d("Found userName: " + s[1], 1);

		s = (String[])lConfig.get("hasAdmin");
		if (s != null) {
			com.d("hasAdmin: " + s[1], 1);
			com.getAdmin().setHasAdmin(new Boolean(s[1]).booleanValue());
			//com.getAdmin().setHasAdmin(true);
		}

		if (com.getAdmin().getHasAdmin()) {
			com.getLeft().showAdminButton();
		}

		setConfig = true;

	}

	public void recalcLinks()
	{
		// recalc() alle linker
		Enumeration e = nh.elements();
		while (e.hasMoreElements())
		{
			Nettel n = (Nettel)e.nextElement();
			n.recalcLink();
		}
	}

	public void refreshNettel()
	{
		refreshNettel(false);
	}

	public void refreshNettel(boolean force)
	{
		if (!force && !needReset) return;
		needReset = false;

		try {
			com.getMainPanel().setWaitCursor();
			if (visNettel == null) showBynett(); else showNettel();
			if (visGruppe == -1) com.getLeft().setNettNavn(""); // Vis blankt menyvalg
			error = false;
		} catch (ServerFetchException e) {
			error = true;
			errorMsg = e.getMessage();
		} finally {
			repaint();
			com.getMainPanel().setDefaultCursor();
		}
	}

	private void showBynett()
	{
		buildBynett();
	}
	private void showNettel()
	{
		visNettel.setSelected(true);
		visNettel.resetLink();
		getNettelLinks(visNettel); // lager en ny nettel Vector med de nye nettel-objektene
		group.removeAllElements();
	}

	public void recordHistory()
	{
		if (!recordHistory) return;
		if (visNettel == null)
		{
			// Vi befinner oss i en gruppe, record den
			history.push(visGruppeNavn);
			history.push("-"+visGruppe);
			com.d("Record history: " + "-"+visGruppe,5);
		} else
		{
			// Vis befinner oss på en nettel, record den
			history.push(visNettel.getHashKey());
			com.d("Record history: " + visNettel.getHashKey(),5);
		}
	}
	public void reverseHistory()
	{
		if (history.isEmpty()) return;
		String s = (String)history.pop();
		com.d("Reverse to: " + s,5);
		int k = Integer.parseInt(s);
		recordHistory = false;

		if (k <= 0)
		{
			k *= -1;

			// Oppdater GUI-menyen med rett gruppe
			com.getLeft().setNettIndex(k);
			String grpNavn = (String)history.pop();
			com.getNet().setVisGruppe(k, grpNavn);
			com.d("Refresh nettel...",6);
			com.getNet().refreshNettel();

		} else
		{
			if (!nh.containsKey(s))
			{
				com.d("Error!! Not found in nh, no path back...",5);
				recordHistory = true;
				Enumeration e = nh.keys();
				while (e.hasMoreElements())
				{
					com.d("Key: " + e.nextElement(),6);
				}
				return;
			}
			Nettel n = (Nettel)nh.get(s);
			n.disablePopup();
			if (n.getKat().equals("gw")) n.setVlan(0);
			com.getNet().setVisNettel(n);
			com.d("Refresh nettel...",6);
			com.getNet().refreshNettel();
		}
		recordHistory = true;
	}




	public void paint(Graphics g)
	{
		// Initialize or reset the off-screen buffer if needed
		if (bufferWidth != getSize().width || bufferHeight != getSize().height || bufferImage == null || bufferGraphics == null)
			resetBuffer();
		
		if (bufferGraphics != null) {
			// Clear the off-screen buffer
			bufferGraphics.clearRect(0, 0, bufferWidth, bufferHeight);
			// Paint an off-screen image 
			paintBuffer(bufferGraphics);
			// Dump the buffered image onto the canvas
			g.drawImage(bufferImage, 0,0, this);
		}
	}

	public void paintBuffer(Graphics g)
	{
		final int ANTALL_PASS = 5;

		if (error) {
			drawErrorMsg(g, errorMsg);
			return;
		}
		
		drawBackKnapp(g);
		drawOverskrift(g);

		for (int i = 0; i < group.size(); i++) {
			Grp grp = (Grp)group.elementAt(i);
			if (!grp.getHideicons()) grp.drawSelf(g);
		}

		for (int i = 1; i <= ANTALL_PASS; i++) {
			Enumeration e = nh.elements();
			while (e.hasMoreElements()) {
				Nettel n = (Nettel)e.nextElement();
				n.drawSelf(g, i);
			}
		}

		for (int i = 0; i < group.size(); i++) {
			Grp grp = (Grp)group.elementAt(i);
			if (grp.getHideicons()) grp.drawSelf(g);
		}

	}

	public void itemStateChanged(ItemEvent e)
	{
		String nettNavn = ((Choice)e.getSource()).getSelectedItem();
		if (nettNavn.equals(""))
		{
			// Valg det tomme elementet, ikke lov
			if (visGruppe == -1) return;
			com.getLeft().setNettIndex(visGruppe);
		}
		if (nettNavn.startsWith("Vis ")) {
			nettNavn = nettNavn.substring(4, nettNavn.length());
		}
		int nett = ((Choice)e.getSource()).getSelectedIndex();

		com.d(" ->Bytter nett til: " + nett + " ("+nettNavn+")", 2);

		com.getNet().setVisGruppe(nett, nettNavn);
		com.getNet().refreshNettel();
	}

	public void drawErrorMsg(Graphics g, String msg)
	{
		int startX = 15;
		int startY = 15;

		g.setColor(Color.black);
		g.drawString("An error occured fetching data from server:", startX+3, startY+15);
		g.drawString(msg, startX+3, startY+35);
	}

	public void drawBackKnapp(Graphics g)
	{
		int startX = 15;
		int startY = 3;
		int sizeX = 45;
		int sizeY = 20;

		backKnapp = new Polygon();

		backKnapp.addPoint(startX, startY);
		backKnapp.addPoint(startX+sizeX, startY);
		backKnapp.addPoint(startX+sizeX, startY+sizeY);
		backKnapp.addPoint(startX, startY+sizeY);

		// kant-linjen på knappen
		g.setColor(Color.black);
		g.drawPolygon(backKnapp);
		// bakgrunns-fargen på knappen
		g.setColor(Color.lightGray);
		g.fillPolygon(backKnapp);
		// teksten på knappen
		g.setColor(Color.black);
		g.drawString("Back", startX+3, startY+15);

	}

	public void drawOverskrift(Graphics g)
	{
		int startX = 70;
		int startY = 5;

		g.setColor(Color.black);

		g.setFont(overskriftFont);
		g.drawString(overskrift, startX+3, startY+15);

	}
	public boolean isBackKnappClicked(int clickX, int clickY) { return backKnapp.contains(clickX, clickY); }

	public void setVisGruppe(int inVisGruppe, String inVisGruppeNavn)
	{
		if (visGruppe != inVisGruppe)
		{
			needReset = true;
			com.getNet().setVisNettel(null);
			recordHistory();
		}
		visGruppe = inVisGruppe;
		visGruppeNavn = inVisGruppeNavn;
	}
	public int getVisGruppe() { return visGruppe; }
	public int getVisGruppeid() {
		return ((Integer)gruppeIdMap.get(visGruppeNavn)).intValue();
	}

	public void setNeedReset(boolean b) { needReset = b; }

	public void setOverskrift(String s) { overskrift = s; }

	public void settFarge(Color c)
	{
		color = c;
	}

	public Vector getGrp() { return group; }
	public Hashtable getNettelHash() { return nh; }
	public Hashtable getLinkHash() { return lh; }

	public Nettel getVisNettel() { return visNettel; }
	public void setVisNettel(Nettel InVisNettel)
	{
		if (InVisNettel != null && visNettel == InVisNettel && visVlan != InVisNettel.getVlan()) needReset = true;
		if (visNettel != InVisNettel) needReset = true;
		if (needReset) recordHistory();
		if (needReset && InVisNettel != null)
		{
			visGruppe = -1; // Vi viser nå ingen gruppe
		}
		visNettel = InVisNettel;
	}

	public void changeVisVlan(int vlan)
	{
		if (visNettel == null || visNettel.getVlan() == 0) return; // Kan ikke skifte vlan

		com.d("Changing visVlan: " + vlan, 3);

		visNettel.setVlan(vlan);
		setVisNettel(visNettel);
		refreshNettel();
	}

	public void setVisVlan(int InVisVlan) { visVlan = InVisVlan; }
	public int getVisVlan() { return visVlan; }

	public boolean getVlanVandring() { return vlanVandring; }
	public boolean getBynettView() { return bynettView; }

	public void showVlanPopupMenu(int x, int y)
	{
		vlanMenu.show(this, x, y);
	}

	public void update(Graphics g) 
	{
		paint(g);
	}

	private void resetBuffer()
	{
		// Make sure the buffer is always the same size as the panel
		bufferWidth = getSize().width;
		bufferHeight = getSize().height;

		// Clean up the old image
		if (bufferGraphics != null) {
			bufferGraphics.dispose();
			bufferGraphics = null;
		}
		if (bufferImage != null) {
			bufferImage.flush();
			bufferImage = null;
		}
		System.gc();

		// Create the new buffer with the size of the panel
		bufferImage = createImage(bufferWidth, bufferHeight);
		bufferGraphics = bufferImage.getGraphics();
	}


}