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Annotation of Examples/AppKit/Draw/graphicsUndo.subproj/GroupGraphicsChange.m, revision 1.1

1.1     ! root        1: #import "drawundo.h"
        !             2: 
        !             3: @interface GroupGraphicsChange(PrivateMethods)
        !             4: 
        !             5: - undoDetails;
        !             6: - redoDetails;
        !             7: 
        !             8: @end
        !             9: 
        !            10: @implementation GroupGraphicsChange
        !            11: 
        !            12: - free
        !            13: {
        !            14:     if (![self hasBeenDone]) {
        !            15:         [[group subGraphics] empty];
        !            16:         [group free];
        !            17:     }
        !            18:     return [super free];
        !            19: }
        !            20: 
        !            21: - (const char *)changeName
        !            22: {
        !            23:     return NXLocalStringFromTable("Operations", "Group", NULL, "The operation of grouping a bunch of graphical entities together.");
        !            24: }
        !            25: 
        !            26: - saveBeforeChange
        !            27: {
        !            28:     [super saveBeforeChange];
        !            29:     [changeDetails makeObjectsPerform:@selector(recordGraphicPositionIn:) with:[graphicView graphics]];
        !            30: 
        !            31:     return self;
        !            32: }
        !            33: 
        !            34: - changeDetailClass
        !            35: {
        !            36:     return [OrderChangeDetail class];
        !            37: }
        !            38: 
        !            39: - noteGroup:aGroup
        !            40: {
        !            41:     group = aGroup;
        !            42:     return self;
        !            43: }
        !            44: 
        !            45: - undoDetails
        !            46: {
        !            47:     int count, i;
        !            48:     id detail, graphic;
        !            49:     List *allGraphics;
        !            50: 
        !            51:     allGraphics = [graphicView graphics];
        !            52:     [allGraphics removeObject:group];
        !            53:     count = [changeDetails count];
        !            54:     for (i = 0; i < count; i++) {
        !            55:        detail = [changeDetails objectAt:i];
        !            56:        graphic = [detail graphic];
        !            57:        [graphic setCacheable:YES];
        !            58:         [allGraphics insertObject:graphic at:[detail graphicPosition]];
        !            59:     }
        !            60:     [graphicView getSelection];
        !            61:     [graphicView resetGroupInSlist];
        !            62:        
        !            63:     return self;
        !            64: }
        !            65: 
        !            66: - redoDetails
        !            67: {
        !            68:     int count, i;
        !            69:     id detail, graphic;
        !            70:     List *selectedGraphics;
        !            71:     List *allGraphics;
        !            72: 
        !            73:     selectedGraphics = [graphicView selectedGraphics];
        !            74:     allGraphics = [graphicView graphics];
        !            75:     count = [changeDetails count];
        !            76:     for (i = 0; i < count; i++) {
        !            77:        detail = [changeDetails objectAt:i];
        !            78:        graphic = [detail graphic];
        !            79:        [graphic setCacheable:NO];
        !            80:         [selectedGraphics removeObject:graphic];
        !            81:         [allGraphics removeObject:graphic];
        !            82:     }
        !            83:     [allGraphics insertObject:group at:0];
        !            84:     [graphicView setGroupInSlist:YES];
        !            85:     [graphicView getSelection];
        !            86: 
        !            87: 
        !            88:     return self;
        !            89: }
        !            90: 
        !            91: @end

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