bluetoothservicerecordcanvas.java

BTBrowser,用JAVA API实现蓝牙通信.

					elm2 = (DataElement) e.nextElement();
					if (elm2.getDataType() == DataElement.DATSEQ) {
						/* Get enumeration to the "inner" DATSEQ */
						Enumeration e2 = (Enumeration) elm2.getValue();
						elm3 = (DataElement) e2.nextElement();
						/* The first element should be a UUID */
						if (elm3.getDataType() == DataElement.UUID) {
							uuid = (UUID) elm3.getValue();
							/* Get short UUID */
							int id = BTUUIDTool.shortUUID(uuid);
							if (id != -1) {
								out = BTUUIDTool.toHexString(id) + ", "
										+ BTProtocol.protocolName(id);
							} else {
								out = "0x" + uuid.toString();
							}
							y += CanvasHelper.printString(out, X2, y, anchor,
									plain, canvasWidth - X2, g);
							/*
							 * If the protocol is L2CAP or RFCOMM, an optional
							 * parameter is set, the PSM for L2CAP or the
							 * channel number for RFCOMM.
							 */
							if ((id == BTProtocol.L2CAP || id == BTProtocol.RFCOMM)
									&& e2.hasMoreElements()) {
								elm3 = (DataElement) e2.nextElement();
								int type = elm3.getDataType();
								/*
								 * The PSM or channel number is expected to be
								 * an int of some kind
								 */
								if (type >= DataElement.U_INT_1
										&& type <= DataElement.INT_16) {
									if (id == BTProtocol.L2CAP) {
										out = "PSM: " + elm3.getLong();
									} else {
										out = "Channel: " + elm3.getLong();
									}
									y += CanvasHelper.printString(out, X3, y,
											anchor, plain, canvasWidth - X3, g);
								}
							}// End check for protocols and elements in
							// DatSeq
						} // End check if elm3 is UUID
					}// End check for Initial element == DatSeq
				}
			} catch (ClassCastException cce) {
				y += CanvasHelper.printString("Unpredicted object", X3, y,
						anchor, plain, canvasWidth - X3, g);
			}
		}
		if (y > canvasHeight)
			return;
		/* Get the BluetoothProfileDescriptorList */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_BLUETOOTHPROFILEDESCRIPTORLIST);
		if (elm != null && elm.getDataType() == DataElement.DATSEQ
				&& offset++ >= 0) {
			y += CanvasHelper.printString("ProfileDescriptorList:", X1, y,
					anchor, bold, canvasWidth - X1, g);
			/*
			 * elm should be a DATSEQ of DATSEQ pairs with a UUID and a version
			 * number
			 */
			DataElement elm2 = null;
			DataElement elm3 = null;
			UUID uuid = null;
			long version = 0;
			try {
				/* Iterate through the "outer" DataElement sequence */
				Enumeration e = (Enumeration) elm.getValue();
				while (e.hasMoreElements()) {
					elm2 = (DataElement) e.nextElement();
					if (elm2.getDataType() == DataElement.DATSEQ) {
						/* Enumerate the "inner" DataElement sequence */
						Enumeration e2 = (Enumeration) elm2.getValue();
						/*
						 * This is a Dataelement pair. First DataElement is
						 * UUID.
						 */
						elm3 = (DataElement) e2.nextElement();
						if (elm3.getDataType() == DataElement.UUID) {
							uuid = (UUID) elm3.getValue();
							shortUUID = BTUUIDTool.shortUUID(uuid);
							if (shortUUID != -1) {
								out = BTUUIDTool.toHexString(shortUUID)
										+ ", "
										+ BTServiceClass
												.serviceClassName(shortUUID);
							} else {
								out = "0x" + uuid.toString();
							}
							y += CanvasHelper.printString(out, X2, y, anchor,
									plain, canvasWidth - X2, g);
						}
						/*
						 * The second DataElement is the version number,
						 * probably stored as an int.
						 */
						elm3 = (DataElement) e2.nextElement();
						int type = elm3.getDataType();
						if (type >= DataElement.U_INT_1
								&& type <= DataElement.INT_16) {
							version = elm3.getLong();
							out = "Version";
							out += (version <= 0 ? " unknown" : ": " + version);
							y += CanvasHelper.printString(out, X3, y, anchor,
									plain, canvasWidth - X3, g);
						} // End version check
					}// End check of "inner" DataElement sequence
				}// End iteration through "outer" DataElement sequence
			} catch (ClassCastException cce) {
				y += CanvasHelper.printString("Unpredicted object", X3, y,
						anchor, plain, canvasWidth - X3, g);
			}
		} // End BluetoothProfileDescriptorList
		if (y > canvasHeight)
			return;
		/* Get the serviceInfoTimeToLive */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_SERVICEINFOTIMETOLIVE);
		if (elm != null && elm.getDataType() == DataElement.U_INT_4
				&& offset++ >= 0) {
			long var = elm.getLong();
			out = Long.toString(var) + " seconds";
			/* Print ServiceInfoTimeToLive */
			y += CanvasHelper.printString("ServiceInfoTimeToLive:", X1, y,
					anchor, bold, canvasWidth - X1, g);
			y += CanvasHelper.printString(out, X2, y, anchor, plain,
					canvasWidth - X2, g);
		}
		if (y > canvasHeight)
			return;
		/* Get the serviceAvailability */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_SERVICEAVAILABILITY);
		if (elm != null && elm.getDataType() == DataElement.U_INT_1
				&& offset++ >= 0) {
			long var = elm.getLong();
			out = Long.toString(var) + "/255";
			/* Print ServiceAvailability */
			y += CanvasHelper.printString("ServiceAvailability:", X1, y,
					anchor, bold, canvasWidth - X1, g);
			y += CanvasHelper.printString(out, X2, y, anchor, plain,
					canvasWidth - X2, g);
		}
		if (y > canvasHeight)
			return;
		/* Get the DocumentationURL */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_DOCUMENTATIONURL);
		if (elm != null && elm.getDataType() == DataElement.URL
				&& offset++ >= 0) {
			documentationURL = (String) elm.getValue();
			/* Print DocumentationURL */
			y += CanvasHelper.printString("Documentation URL:", X1, y, anchor,
					bold, canvasWidth - X1, g);
			y += CanvasHelper.printString(documentationURL, X2, y, anchor,
					plain, canvasWidth - X2, g);
		}
		if (y > canvasHeight)
			return;
		/* Get the clientExecutableURL */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_CLIENTEEXECUTABLEURL);
		if (elm != null && elm.getDataType() == DataElement.URL
				&& offset++ >= 0) {
			clientExecutableURL = (String) elm.getValue();
			/* Print clientExecutableURL */
			y += CanvasHelper.printString("Client Executable URL:", X1, y,
					anchor, bold, canvasWidth - X1, g);
			y += CanvasHelper.printString(clientExecutableURL, X2, y, anchor,
					plain, canvasWidth - X2, g);
		}
		if (y > canvasHeight)
			return;
		/* Get the iconURL */
		elm = (DataElement) sr
				.getAttributeValue(BTServiceAttributeId.SDP_ICONURL);
		if (elm != null && elm.getDataType() == DataElement.URL
				&& offset++ >= 0) {
			out = (String) elm.getValue();
			/* Print Icon URL */
			y += CanvasHelper.printString("Icon URL:", X1, y, anchor, bold,
					canvasWidth - X1, g);
			y += CanvasHelper.printString(out, X2, y, anchor, plain,
					canvasWidth - X2, g);
		}

	}

	public void setServiceRecord(ServiceRecord s) {
		// TODO Auto-generated method stub
		this.sr = s;
		clientExecutableURL = null;
		documentationURL = null;
		attrOffset = 0;
		repaint();
	}

	public String getDocumentationURL() {
		// TODO Auto-generated method stub
		return documentationURL;
	}

	public String getClientExecutableURL() {
		// TODO Auto-generated method stub
		return clientExecutableURL;
	}

	protected void keyPressed(int keyCode) {
		if (keyCode == downKey && y > canvasHeight) {
			/*
			 * Show one attribute less in the top of the canvas, which gives one
			 * attribute more in the bottom of the canvas.
			 */
			attrOffset--;
		} else if (keyCode == upKey && attrOffset < 0) {
			/*
			 * Show one attribute more in the top of the canvas, which gives one
			 * attribute less in the bottom of the canvas.
			 */
			attrOffset++;
		}
		repaint();
	}

}