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libs-gsweb/GSWeb/GSWPopUpButton.m
Sebastian Reitenbach d4cc39b551 * nearly every file 
get rid of RCS_ID

as shortly discussed with David and Manuel



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gsweb/trunk@37929 72102866-910b-0410-8b05-ffd578937521
2014-05-30 18:28:04 +00:00

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Objective-C
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/** GSWPopUpButton.m - <title>GSWeb: Class GSWPopUpButton</title>
Copyright (C) 1999-2004 Free Software Foundation, Inc.
Written by: Manuel Guesdon <mguesdon@orange-concept.com>
Date: Jan 1999
$Revision$
$Date$
This file is part of the GNUstep Web Library.
<license>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
</license>
**/
#include "config.h"
#include "GSWeb.h"
#include "GSWPrivate.h"
#include <GNUstepBase/NSString+GNUstepBase.h>
/**
Bindings
list Array of objects that the dynamic element iterate through.
index On each iteration the element put the current index in this binding
item On each iteration the element take the item at the current index and put it in this binding
displayString String to display for each item.
value Value for each OPTION tag
selection Selected object (used to pre-select item and modified to reflect user choice)
It contains object from list, not value binding evaluated one !
selectedValue Pre selected value (not object !)
selectionValue Selected value (used to pre-select item and modified to reflect user choice)
It contains object from list, not value binding evaluated one !
name Name of the element in the form (should be unique). If not specified, GSWeb assign one.
disabled If evaluated to yes, the check box appear inactivated.
escapeHTML If evaluated to yes, escape displayString
noSelectionString If binded, displayed as the first item. If selected, considered as
an empty selection (selection is set to nil, selectionValue too)
**/
//====================================================================
@implementation GSWPopUpButton
//--------------------------------------------------------------------
-(id)initWithName:(NSString*)aName
associations:(NSDictionary*)associations
template:(GSWElement*)template
{
if ((self = [super initWithName:@"select"
associations:associations
template: template]))
{
_loggedSlow = NO;
GSWAssignAndRemoveAssociation(&_list,_associations,list__Key);
GSWAssignAndRemoveAssociation(&_item,_associations,item__Key);
GSWAssignAndRemoveAssociation(&_string,_associations,displayString__Key);
GSWAssignAndRemoveAssociation(&_selection,_associations,selection__Key);
GSWAssignAndRemoveAssociation(&_noSelectionString,_associations,noSelectionString__Key);
GSWAssignAndRemoveAssociation(&_selectedValue,_associations,selectedValue__Key);
if (_list == nil
|| (_value != nil && (_item == nil && [_item isValueSettable] == NO))
|| ((_string != nil || _item != nil) && _item == nil)
|| (_selection != nil && [_selection isValueSettable] == NO))
{
[NSException raise:NSInvalidArgumentException
format:@"%s: 'list' must be present. 'item' must not be a constant if 'value' is present. Cannot have 'displayString' or 'value' without 'item'. 'selection' must not be a constant if present.",
__PRETTY_FUNCTION__];
}
if (_selection != nil
&& _selectedValue != nil)
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Cannot have both selections and selectedValues.",
__PRETTY_FUNCTION__];
}
}
return self;
}
//--------------------------------------------------------------------
-(void) dealloc
{
DESTROY(_list);
DESTROY(_item);
DESTROY(_string);
DESTROY(_selection);
DESTROY(_selectedValue);
DESTROY(_noSelectionString);
[super dealloc];
}
//--------------------------------------------------------------------
-(id) description
{
return [NSString stringWithFormat:@"<%s %p list:%@ item:%@ string:%@ selections:%@ selectedValue:%@ NoSelectionString:%@ >",
object_getClassName(self),
(void*)self,
_list, _item, _string, _selection, _selectedValue, _noSelectionString];
};
//--------------------------------------------------------------------
- (void)_slowTakeValuesFromRequest:(GSWRequest*) request
inContext:(GSWContext*) context
{
GSWComponent * component = GSWContext_component(context);
if (_selection != nil
&& ![self disabledInComponent:component]
&& [context _wasFormSubmitted])
{
id selection = nil;
NSString * ctxName = [self nameInContext:context];
NSString * formValue = [request stringFormValueForKey: ctxName];
if (formValue != nil
&& ![formValue isEqual:@"WONoSelectionString"])
{
NSArray* list = [_list valueInComponent:component];
if (list != nil)
{
if ([list isKindOfClass:[NSArray class]])
{
NSUInteger listCount = [list count];
NSUInteger i = 0;
IMP oaiIMP=NULL;
for(i=0;i<listCount;i++)
{
id value = nil;
id item = GSWeb_objectAtIndexWithImpPtr(list,&oaiIMP,i);
[_item setValue: item
inComponent:component];
value = [_value valueInComponent:component];
if (value != nil)
{
if ([formValue isEqual:NSStringWithObject(value)])
{
selection = item;
break;
}
}
else
{
NSLog(@"%s:'value' evaluated to nil in component '%@'.\nUnable to select item '%@'",
__PRETTY_FUNCTION__,component,item);
}
}
}
else
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Evaluating 'list' binding returned a '%@' class and not a NSArray.",
__PRETTY_FUNCTION__, [list class]];
}
}
}
[_selection setValue:selection
inComponent: component];
}
}
//--------------------------------------------------------------------
- (void) _fastTakeValuesFromRequest:(GSWRequest*) request
inContext:(GSWContext*) context
{
if (_selection != nil)
{
GSWComponent * component = GSWContext_component(context);
if (![self disabledInComponent:component]
&& [context _wasFormSubmitted])
{
id selection = nil;
NSString * ctxName = [self nameInContext:context];
NSString * formValue = [request stringFormValueForKey: ctxName];
if (formValue != nil)
{
formValue = [formValue stringByTrimmingSpaces];
if (![formValue isEqual:@"WONoSelectionString"])
{
int i = [formValue intValue];
NSArray* list = [_list valueInComponent:component];
if (list != nil)
{
if ([list isKindOfClass:[NSArray class]])
{
if (i < [list count]
&& i >= 0)
{
selection = [list objectAtIndex:i];
}
}
else
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Evaluating 'list' binding returned a '%@' class and not a NSArray.",
__PRETTY_FUNCTION__, [list class]];
}
}
}
}
[_selection setValue: selection
inComponent: component];
}
}
}
//--------------------------------------------------------------------
-(void)takeValuesFromRequest:(GSWRequest*)request
inContext:(GSWContext*)context
{
if (_value != nil)
{
if (!_loggedSlow)
{
NSLog(@"%s Warning: Avoid using the 'value' binding as it is much slower than omitting it, and it is just cosmetic.",
__PRETTY_FUNCTION__);
_loggedSlow = YES;
}
[self _slowTakeValuesFromRequest:request
inContext:context];
}
else
{
[self _fastTakeValuesFromRequest:request
inContext:context];
}
}
//--------------------------------------------------------------------
-(void) _appendValueAttributeToResponse:(GSWResponse *) response
inContext:(GSWContext*) context
{
//do nothing
}
//--------------------------------------------------------------------
-(void) appendChildrenToResponse:(GSWResponse *) response
inContext:(GSWContext*) context
{
NSArray * list = nil;
NSUInteger listCount = 0;
GSWComponent * component = GSWContext_component(context);
BOOL doEscape = YES;
if (_escapeHTML != nil)
doEscape = [_escapeHTML boolValueInComponent:component];
list = [_list valueInComponent:component];
if (list != nil)
{
if ([list isKindOfClass:[NSArray class]])
{
listCount = [list count];
}
else
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Evaluating 'list' binding returned a '%@' class and not a NSArray.",
__PRETTY_FUNCTION__, [list class]];
}
}
if (_noSelectionString != nil)
{
id noSelectionValue = [_noSelectionString valueInComponent:component];
if (noSelectionValue != nil)
{
GSWResponse_appendContentAsciiString(response,@"\n<option value=\"WONoSelectionString\">");
// wo seems to NOT do it right here. They escape always.
if (doEscape)
GSWResponse_appendContentHTMLConvertString(response,NSStringWithObject(noSelectionValue));
else
GSWResponse_appendContentString(response, NSStringWithObject(noSelectionValue));
GSWResponse_appendContentAsciiString(response, @"</option>");
}
else
{
[NSException raise:NSInvalidArgumentException
format:@"%s: 'noSelectionString' evaluated to nil in component '%@'. Did not insert a WONoSelectionString.",
__PRETTY_FUNCTION__, component];
}
}
if (listCount>0)
{
NSString* selectedValueString = nil;
id selection = nil;
int i=0;
IMP oaiIMP=NULL;
if (_selection != nil)
selection = [_selection valueInComponent:component];
else if (_selectedValue != nil)
selectedValueString = NSStringWithObject([_selectedValue valueInComponent:component]);
for (i = 0; i < listCount; i++)
{
NSString* valueString = nil;
NSString* displayString = nil;
id item = nil;
BOOL isSelected = NO;
if (list != nil)
item = GSWeb_objectAtIndexWithImpPtr(list,&oaiIMP,i);
if (_string != nil
|| _value != nil)
{
[_item setValue:item
inComponent:component];
if (_string != nil)
{
displayString = NSStringWithObject([_string valueInComponent:component]);
if (displayString != nil)
{
if (_value != nil)
valueString = NSStringWithObject([_value valueInComponent:component]);
else
valueString = displayString;
}
}
else
{
valueString = NSStringWithObject([_value valueInComponent:component]);
displayString = valueString;
}
}
else
{
displayString = NSStringWithObject(item);
valueString = displayString;
}
GSWResponse_appendContentAsciiString(response,@"\n<option");
if (_selection != nil)
{
if (selection!=nil)
isSelected = [selection isEqual:item];
}
else if (_selectedValue != nil)
{
if (_value != nil)
{
if (selectedValueString)
isSelected = [selectedValueString isEqual: valueString];
}
else
{
isSelected = [GSWIntToNSString(i) isEqual:selectedValueString];
}
}
if (isSelected)
{
GSWResponse_appendContentCharacter(response,' ');
GSWResponse_appendContentAsciiString(response,@"selected");
}
if (_value != nil)
{
GSWResponse_appendTagAttributeValueEscapingHTMLAttributeValue(response,
value__Key,
valueString,
YES);
}
else
{
GSWResponse_appendTagAttributeValueEscapingHTMLAttributeValue(response,
value__Key,
GSWIntToNSString(i),
NO);
}
GSWResponse_appendContentCharacter(response,'>');
if (doEscape)
GSWResponse_appendContentHTMLConvertString(response, displayString);
else
GSWResponse_appendContentString(response, displayString);
GSWResponse_appendContentAsciiString(response,@"</option>");
}
}
}
@end
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