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libs-gsweb/GSWeb/GSWBrowser.m
buzzdee 49f8fa1d8d * 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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/** GSWBrowser.m - <title>GSWeb: Class GSWBrowser</title>
Copyright (C) 1999-2003 Free Software Foundation, Inc.
Written by: David Wetzel <dave@turbocat.de>
Date: Oct 2006
$Revision$
$Date$
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"
/**
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 check box.
value Value for each OPTION tag
selections Array of selected objects (used to pre-select items and modified to reflect user choices)
It contains objects from list, not value binding evaluated ones !
selectedValues Array of pre selected values (not objects !)
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
size show 'size' iems at one time. Default=5. Must be > 1
multiple multiple selection allowed
**/
//====================================================================
@implementation GSWBrowser
//--------------------------------------------------------------------
-(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(&_displayString,_associations,displayString__Key);
GSWAssignAndRemoveAssociation(&_selections,_associations,selections__Key);
GSWAssignAndRemoveAssociation(&_multiple,_associations,multiple__Key);
GSWAssignAndRemoveAssociation(&_size,_associations,size__Key);
GSWAssignAndRemoveAssociation(&_selectedValues,_associations,selectedValues__Key);
GSWAssignAndRemoveAssociation(&_escapeHTML,_associations,escapeHTML__Key);
if (_list == nil || ((_value != nil || _displayString != nil) &&
((_item == nil || ![_item isValueSettable]))) ||
(_selections != nil && ![_selections isValueSettable]))
{
[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 (_selections != nil
&& _selectedValues != nil)
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Cannot have both selections and selectedValues.",
__PRETTY_FUNCTION__];
}
}
return self;
}
//--------------------------------------------------------------------
-(void)dealloc
{
DESTROY(_list);
DESTROY(_item);
DESTROY(_displayString);
DESTROY(_selections);
DESTROY(_selectedValues);
DESTROY(_size);
DESTROY(_multiple);
[super dealloc];
};
//--------------------------------------------------------------------
-(id) description
{
return [NSString stringWithFormat:@"<%s %p list:%@ item:%@ displayString:%@ selections:%@ selectedValues:%@ multiple:%@ size:%@ escapeHTML:%@>",
object_getClassName(self),
(void*)self,
_list, _item, _displayString, _selections, _selectedValues, _multiple,
_size, _escapeHTML];
};
//--------------------------------------------------------------------
/*
On WO it looks like that when value is not bound:
<SELECT name="4.2.7" size=5 multiple>
<OPTION value="0">blau</OPTION>
<OPTION value="1">braun</OPTION>
<OPTION selected value="2">gruen</OPTION>
<OPTION value="3">marineblau</OPTION>
<OPTION value="4">schwarz</OPTION>
<OPTION value="5">silber</OPTION>
<OPTION value="6">weiss</OPTION></SELECT>
*/
-(void) appendChildrenToResponse:(GSWResponse *) response
inContext:(GSWContext*) context
{
GSWComponent * component = GSWContext_component(context);
BOOL doEscape = YES;
NSArray* list = nil;
NSUInteger listCount = 0;
NSArray* selections = nil;
int i = 0;
IMP oaiIMP=NULL;
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 (_selections != nil)
selections = [_selections valueInComponent:component];
else if (_selectedValues != nil)
selections = [_selectedValues valueInComponent:component];
for (i = 0; i < listCount; i++)
{
NSString* displayString=nil;
id item = nil;
BOOL isSelected=NO;
NSString* valueString = nil;
id value = nil;
if (list != nil)
item = GSWeb_objectAtIndexWithImpPtr(list,&oaiIMP,i);
if (_displayString != nil
|| _value != nil)
{
[_item setValue:item
inComponent:component];
if (_displayString != nil)
{
displayString = [_displayString valueInComponent:component];
if (displayString!=nil)
{
if (_value != nil)
{
value = [_value valueInComponent:component];
valueString = NSStringWithObject(value);
}
else
{
value = displayString;
valueString = NSStringWithObject(displayString);
}
displayString=NSStringWithObject(displayString);
}
}
else
{
value = [_value valueInComponent:component];
if (value != nil)
{
valueString=NSStringWithObject(value);
displayString = valueString;
}
}
}
else
{
value = item;
valueString = NSStringWithObject(item);
displayString = valueString;
}
GSWResponse_appendContentAsciiString(response,@"\n<option");
if (_selections != nil)
{
if (item
&& selections)
isSelected = [selections containsObject:item];
}
else
{
if (_value != nil)
{
if (item
&& selections)
isSelected = [selections containsObject:value];
}
else
isSelected = [selections containsObject:GSWIntToNSString(i)];
}
if (isSelected)
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>");
}
}
//--------------------------------------------------------------------
-(void) _appendValueAttributeToResponse:(GSWResponse *) response
inContext:(GSWContext*) context
{
//Do nothing
}
//--------------------------------------------------------------------
-(void) appendAttributesToResponse:(GSWResponse *) response
inContext:(GSWContext*) context
{
id sizeValue = nil;
int sizeInt = 5;
GSWComponent * component = GSWContext_component(context);
[super appendAttributesToResponse:response
inContext:context];
if (_size != nil)
{
sizeValue = [_size valueInComponent:component];
sizeInt = [sizeValue intValue];
sizeValue = GSWIntToNSString(sizeInt);
}
if (_size == nil
|| sizeValue == nil
|| sizeInt < 2)
{
sizeValue = GSWIntToNSString(5);
}
GSWResponse_appendTagAttributeValueEscapingHTMLAttributeValue(response, size__Key, sizeValue, NO);
if (_multiple != nil
&& [_multiple boolValueInComponent:component])
{
GSWResponse_appendContentAsciiString(response,@" multiple");
}
}
//--------------------------------------------------------------------
- (void)_slowTakeValuesFromRequest:(GSWRequest*) request
inContext:(GSWContext*) context
{
GSWComponent * component = GSWContext_component(context);
if (_selections != nil
&& ![self disabledInComponent:component]
&& [context _wasFormSubmitted])
{
NSString * ctxName = [self nameInContext:context];
NSArray * formValues = [request formValuesForKey: ctxName];
NSArray * selections = nil;
if (formValues != nil)
{
NSUInteger formValuesCount = [formValues count];
if (formValuesCount>0)
{
if (_list != nil)
{
NSArray* list = [_list valueInComponent:component];
if ([list isKindOfClass:[NSArray class]] == NO)
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Evaluating 'list' binding returned a '%@' class and not a NSArray.",
__PRETTY_FUNCTION__, [list class]];
}
else
{
NSUInteger listCount = [list count];
int i=0;
IMP oaiIMP=NULL;
BOOL multiple = NO;
if (_multiple != nil)
multiple = [_multiple boolValueInComponent:component];
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 ([formValues containsObject:NSStringWithObject(value)])
{
if (selections==nil)
selections=[NSMutableArray array];
[(NSMutableArray*)selections addObject:item];
if (!multiple)
break;
}
}
else
{
NSLog(@"%s: 'value' evaluated to null in component %@, %@",
__PRETTY_FUNCTION__, component, self);
}
}
}
}
}
}
if (selections==nil)
selections = [NSArray array];
[_selections setValue:selections
inComponent: component];
}
}
//--------------------------------------------------------------------
- (void) _fastTakeValuesFromRequest:(GSWRequest*) request
inContext:(GSWContext*) context
{
GSWComponent * component = GSWContext_component(context);
if (_selections != nil
&& ![self disabledInComponent:component]
&& [context _wasFormSubmitted])
{
NSString * ctxName = [self nameInContext:context];
NSArray * formValues = [request formValuesForKey: ctxName];
NSArray * selections = nil;
if (formValues != nil)
{
int formValuesCount = [formValues count];
if (formValuesCount>0)
{
NSArray* list = nil;
if (_list != nil)
{
list = [_list valueInComponent:component];
if ([list isKindOfClass:[NSArray class]] == NO)
{
[NSException raise:NSInvalidArgumentException
format:@"%s: Evaluating 'list' binding returned a '%@' class and not a NSArray.",
__PRETTY_FUNCTION__, [list class]];
}
else
{
IMP formValues_oaiIMP=NULL;
IMP list_oaiIMP=NULL;
int i=0;
BOOL multiple = NO;
if (_multiple != nil)
multiple = [_multiple boolValueInComponent:component];
for (i = 0; i < formValuesCount; i++)
{
NSString* formValue = GSWeb_objectAtIndexWithImpPtr(formValues,&formValues_oaiIMP,i);
int intFormValue = [formValue intValue];
if (list != nil)
{
id item = GSWeb_objectAtIndexWithImpPtr(list,&list_oaiIMP,intFormValue);
if (selections==nil)
selections=[NSMutableArray array];
[(NSMutableArray*)selections addObject:item];
}
if (!multiple)
break;
}
}
}
}
}
if (selections==nil)
selections = [NSArray array];
[_selections setValue:selections
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];
}
}
@end
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