Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
AppearanceSample-5/TextPane.cp
/* |
File: TextPane.cp |
Contains: Class to drive our text pane in MegaDialog. |
Version: Mac OS X |
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*/ |
#include "AppearanceSamplePrefix.h" |
#if !BUILDING_FOR_CARBON_8 |
#include <Carbon/Carbon.h> |
#else |
#include <Carbon.h> |
#endif |
#include "TextPane.h" |
#include "AppearanceHelpers.h" |
// |
// Enums, etc. |
// |
enum |
{ |
kStaticText = 1, |
kDisabledStaticText = 2, |
kEditText = 3, |
kPasswordEditText = 4, |
kEditFilterText = 5, |
kClock = 6, |
kListBox = 7, |
kShowPasswordButton = 8, |
kPasswordStaticText = 10 |
}; |
enum |
{ |
kLeftArrow = 0x1C, |
kRightArrow = 0x1D, |
kUpArrow = 0x1E, |
kDownArrow = 0x1F, |
kBackspace = 0x08 |
}; |
enum |
{ |
kListBoxStringsID = 130 |
}; |
// |
// Our keyfilter callback. |
// |
ControlKeyFilterUPP TextPane::fFilterProc = NewControlKeyFilterUPP( TextPane::NumericFilter ); |
// |
// TextPane |
// |
// Constructor. Append our DITL and load our list box, etc. |
// |
TextPane::TextPane( DialogPtr dialog, SInt16 items ) : MegaPane( dialog, items ) |
{ |
ControlHandle control; |
ListHandle list; |
OSErr err; |
AppendDialogItemList( dialog, 6400, overlayDITL ); |
GetDialogItemAsControl( dialog, items + kDisabledStaticText, &control ); |
DeactivateControl( control ); |
GetDialogItemAsControl( dialog, items + kListBox, &control ); |
err = GetListBoxListHandle( control, &list ); |
if ( err == noErr ) |
{ |
Cell cell; |
SInt16 i; |
Str255 string; |
Rect dataBounds; |
cell.h = 0; |
for ( i = 1; true; i++ ) |
{ |
GetIndString( string, kListBoxStringsID, i ); |
if ( string[0] == 0 ) break; |
GetListDataBounds( list, &dataBounds ); |
LAddRow( 1, dataBounds.bottom, list ); |
GetListDataBounds( list, &dataBounds ); |
cell.v = dataBounds.bottom - 1; |
LSetCell( (Ptr)(string + 1), string[0], cell, list ); |
} |
} |
GetDialogItemAsControl( dialog, items + kEditFilterText, &control ); |
SetEditTextKeyFilter( control, fFilterProc ); |
} |
// |
// ~TextPane |
// |
// Destructor. Get rid of our DITL items. |
// |
TextPane::~TextPane() |
{ |
ShortenDITL( fDialog, CountDITL( fDialog ) - fOrigItems ); |
} |
// |
// ItemHit |
// |
// Our item hit handler. Here we handle clicks on our items. |
// |
void |
TextPane::ItemHit( SInt16 itemHit ) |
{ |
SInt16 localItem = itemHit - fOrigItems; |
ControlHandle control; |
Str255 text; |
switch ( localItem ) |
{ |
case kShowPasswordButton: |
GetDialogItemAsControl( fDialog, fOrigItems + kPasswordEditText, &control ); |
GetEditTextPasswordText( control, text ); |
GetDialogItemAsControl( fDialog, fOrigItems + kPasswordStaticText, &control ); |
SetStaticTextText( control, text, true ); |
break; |
} |
} |
// |
// NumericFilter CALLBACK |
// |
// Our numeric key filter. This is called each time the edit field this controls is |
// attached to receives a keystroke. We can either accept the keystroke or block it. |
// To do this, we return either kControlKeyFilterPassKey or kControlKeyFilterBlockKey. |
// |
pascal ControlKeyFilterResult |
TextPane::NumericFilter( ControlHandle control, SInt16* keyCode, SInt16* charCode, EventModifiers* modifiers) |
{ |
#pragma unused( control, keyCode, modifiers ) |
if ( ((char)*charCode >= '0') && ((char)*charCode <= '9') ) |
return kControlKeyFilterPassKey; |
switch ( *charCode ) |
{ |
case '-': |
case kLeftArrow: |
case kRightArrow: |
case kUpArrow: |
case kDownArrow: |
case kBackspace: |
return kControlKeyFilterPassKey; |
default: |
SysBeep( 10 ); |
return kControlKeyFilterBlockKey; |
} |
} |
Copyright © 2005 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2005-06-27