Nebula 2/Nebula Two.iso/SourceCode/MiscKit1.7.1/MiscKit/Examples/FileBrowser/MyController.m

Text File | 1995-04-12 | 5.6 KB | 247 lines

//        Written by Todd Thomas Copyright (c) 1995 by Todd Thomas.
//                Version 1.0.  All rights reserved.
//
//        This notice may not be removed from this source code.
//
//    This object is included in the MiscKit by permission from the author
//    and its use is governed by the MiscKit license, found in the file
//    "LICENSE.rtf" in the MiscKit distribution.  Please refer to that file
//    for a list of all applicable permissions and restrictions.
//

#import <appkit/appkit.h>
#import <misckit/MiscFile.h>
#import <misckit/MiscAppFile.h>
#import "MyNXBrowserCell.h"
#import "Inspector.subproj/FileInspector.h"
#import "MyController.h"


@implementation MyController

- init
{
    [super init];
    rootFile = [ [MiscFile alloc] initWithPath: "/"];

    // Used so we can create children of different classes depending upon
    // their extension. For this example, there is just one subclass of
    // MiscFile which will be used for any file that has the "app" extension.
    [rootFile setCreateChildrenUsingExtensions: YES];
    [MiscFile registerFileClass: [MiscAppFile class] forExtension: "app"];
    inspector = nil;

    return self;
}


- free
{
    [rootFile free];
    return [super free];
}


- updateDirectory: sender
{
    // Called when we click the "Update Directory" button.
      id  selectedFile = [ [browser selectedCell] file];
      int  selectedCol = [browser selectedColumn];

      if ([selectedFile isDirectory])
    {
        [selectedFile updateChildren];
        selectedCol++;
     }
    else
        [ [ [selectedFile parents] objectAt: 0] updateChildren];

    [browser reloadColumn: selectedCol];

    return self;
}


- showInspector: sender
{
    // Load the inspector if it hasn't been already.
    if (inspector == nil)
    {
        char  path[MAXPATHLEN+1];

        if ([ [NXBundle mainBundle] getPath: path forResource: "Inspector"
                    ofType: "nib"])
            [NXApp loadNibFile: path owner: self];

     }

    // Display the inspector window.
    [self inspectFile: nil];
    [ [inspector window] orderFront: nil];
    return self;
}


- inspectFile: sender
{
    // If the inspector is loaded then let it know there is a new
    // file to look at.
    if (inspector != nil)
    {
        if ([ [sender selectedCell] file] == nil)
            [inspector selectedFile: rootFile];
        else
            [inspector selectedFile: [ [sender selectedCell ] file] ];
     }
    return self;
}


- duplicateFile: sender
{
    // When the menu item "Duplicate file" is clicked upon, get the selected
    // item and try to duplicate it.
    MiscFile  *selFile = [ [browser selectedCell] file];
    char  tmp[MAXPATHLEN+1];
    char  *ptr;

    if (selFile == nil)
        return self;

    strcpy (tmp, [selFile fullPath]);
    ptr = strrchr (tmp, '/');
    *(ptr+1) = '\0';

    strcat (tmp, "CopyOf");
    strcat (tmp, [selFile filename]);

    if ([selFile createCopyNamed: tmp] == nil)
        NXRunAlertPanel ("Oh no!", "Couldn't create the copy. Sorry.",
                        "OK", 0, 0);

    [self updateDirectory: nil];
    return self;
}


- createSymLink: sender
{
    // Create a symbolic link to the selected file in the browser.
    MiscFile  *selFile = [ [browser selectedCell] file];
    char  tmp[MAXPATHLEN+1];
    char  *ptr;

    if (selFile == nil)
        return self;

    strcpy (tmp, [selFile fullPath]);
    ptr = strrchr (tmp, '/');
    *(ptr+1) = '\0';

    strcat (tmp, "SymLinkOf");
    strcat (tmp, [selFile filename]);

    if ([selFile createSymbolicLinkNamed: tmp] == nil)
        NXRunAlertPanel ("Oh no!", "Couldn't create the symbolic link. Sorry.",
                        "OK", 0, 0);

    [self updateDirectory: nil];
    return self;
}


- createHardLink: sender
{
    // Create a hard link to the selected file in the browser.
    MiscFile  *selFile = [ [browser selectedCell] file];
    char  tmp[MAXPATHLEN+1];
    char  *ptr;

    if (selFile == nil)
        return self;

    strcpy (tmp, [selFile fullPath]);
    ptr = strrchr (tmp, '/');
    *(ptr+1) = '\0';

    strcat (tmp, "HardLinkOf");
    strcat (tmp, [selFile filename]);

    if ([selFile createHardLinkNamed: tmp] == nil)
        NXRunAlertPanel ("Oh no!", "Couldn't create the link. Sorry.",
                        "OK", 0, 0);

    [self updateDirectory: nil];
    return self;
}

@end


@implementation MyController (NibInitialization)

// Do some initialization (especially to the browser).

- awakeFromNib
{
    // Use new browser cell to keep track of underlying MiscFile each cell
    // represents.
    [browser setCellClass: [MyNXBrowserCell class] ];

    // The delegate is set here instead of in IB because when it is set
    // in IB, loadColumnZero gets called (from within drawSelf::) before
    // this awakeFromNib does, and since the new browser cell isn't set
    // yet, it crashes. I mailed it to Bug_NeXT.

    [browser setDelegate: self];
    [browser setTarget: self];
    [browser setAction: @selector(inspectFile:)];
    [browser loadColumnZero];
    return self;
}

@end


@implementation MyController (BrowserDelegate)

// Load up whatever column we are supposed to. If we are loading the
// first one just use the rootFile, else we have to ask the
// rightmost selected cell to tell us the MiscFile it represents.

- (int)browser:sender fillMatrix:matrix inColumn:(int)column
{
  id  displayFile = nil;
  id  children = nil;
  id  child = nil;
  id  cell = nil;
  int  i;

    // determine which MiscFile to use
    if (column == 0)
        displayFile = rootFile;
    else
        // get the MiscFile represented by the rightmost selected cell
        displayFile = [ [browser selectedCell] file];

    children = [displayFile children];

    // Load up the matrix with the MiscFile's children.

    for (i=0; i<[children count]; i++)
    {
        [matrix insertRowAt: i];
        cell = [matrix cellAt: i :0];
        child = [children objectAt: i];
        [cell setStringValue: [child filename] ];
        [cell setFile: child];    // This is so each cell knows it's MiscFile
        [cell setLoaded: YES];
        [cell setLeaf: [child displayAsLeaf] ];
     }

    return [children count];
}

@end