filebrowsingcanvas.java

手机赛车蓝牙连接

                //repaint();
                break; 
            case -2: // DOWN
                if(dirIndex>=dirList.size()-1)
                        return;
                else if(visibleBottomIndex>dirIndex+1){
                        dirIndex++;
                        dirIndexIsImage=isImage( ((String)dirList.elementAt(dirIndex)) );
                }
                else {
                    dirIndex++;
                    visibleBottomIndex++;
                    visibleTopIndex++;
                    dirIndexIsImage=isImage( ((String)dirList.elementAt(dirIndex)) );
                }
                //repaint();
                break; 
            case -3: //LEFT
                break; 
            case -4: // RIGHT
                break; 
            case -5: // FIRE
                if(dirIndexIsImage) // if the marked item is an image load the image and show it
                {
                    loadImage();
                    break;
                }
                if(dirIndex<lastDirIndex)
                    traverse();
                break;
            case -6: // Left Soft Button - View
                if(dirIndexIsImage)
                {
                    loadImage();
                    break;
                }
                if(dirIndex<lastDirIndex)
                    traverse();
                break;
            case -7: // Selected home dir
                 if(browserType==TYPE_SET_HOMEDIR)
                 {
                     PropertyClass.HOME_DIR=currentDir+(String)dirList.elementAt(dirIndex);
                 }
                 break;
            case -11: // BACK
                this.stopped=true;
                FileConnectionDemoMidlet.display.setCurrent(next);
                
                break; 
        } 
        
    
    } 
    
    public void updateDirList(Enumeration e, boolean isRoot)
    {
        // This is a callback method used by the FileAction to send us 
        // the directoryContent.
        
        // if e is null somtheing went wrong and we don't do anything
        if(e==null)
        {
            return;
        }
        
        // remove all elements in the dirList vector
        dirList.removeAllElements();
        // setting the indexes
        lastDirIndex=0;
        visibleTopIndex=0;
        visibleBottomIndex=visibleBottomIndex_START;
        dirIndex=0;
        // If we are not in the root add the .. directory for going back in the filesystem
        if(!isRoot)
        {
            dirList.addElement("..");
            lastDirIndex++;
        }
        // Add all content to the dirList vector
        while (e.hasMoreElements()) {
            String s =(String)e.nextElement();
            if(s.endsWith("/")) // If it is a directory
            {
                dirList.insertElementAt(s,lastDirIndex);
                lastDirIndex++;
            }
            else if(browserType!=TYPE_SET_HOMEDIR) // If it is a file and the FilebrosingCanvs is not of type TYPE_SET_HOMEDIR we add the files to the dirList
                dirList.addElement(s);
            
        }
        // set the last indexes
        dirSize=dirList.size();
        dirIndexIsImage=false;
        //repaint();
        
    } 

    // This method is called when the user press Left sofbutton or fire
    // to display the content in the marked directory
    private void traverse()
    {
        String choosenDir = (String)dirList.elementAt(dirIndex);
        
        // If the marked directory is .. traverse back in the filesystem
        if (choosenDir.equals(".."))
        {
            int i = currentDir.lastIndexOf('/', currentDir.length()-2);
            if (i != -1) {
                currentDir= currentDir.substring(0, i+1);
            } else {
                currentDir= "/";
            }
            
            // Start the thread to get the content of the .. directory 
            // the fileaction object will call the updateDirList method when it has retrieveed all the content.
            
            new Thread(new Runnable() {
                public void run() {
                    fileAction.getDirContent(currentDir);
                }
            }).start();

            
        }
        else if(dirIndex<lastDirIndex ) // Else traverse into the marked Directory 
        {
            
            currentDir=currentDir+choosenDir;
            // Start the thread to get the content of the choosenDir directory 
            // the fileaction object will call the updateDirList method when it has retrieveed all the content.
            new Thread(new Runnable() {
                public void run() {
                    fileAction.getDirContent(currentDir);
                }
            }).start();

            
        }
        
         
    }
    

 
    // Repainting the canvas
    public void run()
    {
        while(!stopped)
        {
            repaint();
            try{
                thread.sleep(10);
            }
            catch(Exception e){}
        }
    }

    // used to check if a file is a image file.
    private boolean isImage(String im)
    {
        int length = im.length()-4;
        if(length<1)
            return false;
        
        String s = im.substring(length);
        System.out.println(s);
        
        if(s.equalsIgnoreCase(".jpg"))
            return true;
        if(s.equalsIgnoreCase(".gif"))
            return true;
        if(s.equalsIgnoreCase(".png"))
            return true;
        if(s.equalsIgnoreCase(".bmp"))
            return true;
        
        System.out.println("FALSE");
        return false;
        
    }
    
    // Load a image from a file
    private void loadImage()
    {
        final String choosenImage = "file://"+currentDir+(String)dirList.elementAt(dirIndex);
        // start the fileAction to get the image, it will call the method ImageReceived when it is finsihed
       new Thread(new Runnable() {
                public void run() {
                    fileAction.getImage(choosenImage);
                }
            }).start();
    }
    
    // this method is used by the FileAction object to send the 
    // image when it done retrieving it from the filesystem
    public void ImageReceived(Image im)
    {
        if(im==null)
            return;
            
        image = im;
        
        showingImage=true;
    }

public void fileSavedComplete(String msg){}

// Setting the proprtied we are using in the paint method
private void setProperties()
{
        font_medium_Height= medium_Font.getHeight();
        font_small_Height= small_Font.getHeight();
        font_medium_Width= medium_Font.charWidth('w');
        font_small_Width= small_Font.charWidth('w');
        System.out.println("font_medium_Height:"+font_medium_Height);
        System.out.println("font_small_Height:"+font_small_Height);
        text_button_Width=font_medium_Width*4;
        
        visibleTopIndex=0;
        visibleBottomIndex_START=(HEIGHT - 4* font_medium_Height)/font_small_Height;
        visibleBottomIndex=visibleBottomIndex_START;
        currentDir="/";
    
}
// Loading the program images such as file and the folder images
private void loadProgramImages()
{
    try{
        folderImage = Image.createImage("/res/folder.PNG");
        fileImage = Image.createImage("/res/file.PNG");
        downArrowImage = Image.createImage("/res/downArrow.PNG");
        upArrowImage = Image.createImage("/res/upArrow.PNG");
    }
    catch(Exception e){System.out.println("LoadProgramImages:"+e.toString());}
    
}

}