* Copyright 2008-2010, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Michael Pfeiffer <laplace@users.sourceforge.net>
*/
#include "WizardController.h"
#include "WizardView.h"
#include "WizardPageView.h"
void
WizardController::StateStack::MakeEmpty()
{
StateStack* stack = this;
StateStack* next;
do {
next = stack->Next();
delete stack;
stack = next;
} while (next != NULL);
}
WizardController::WizardController()
:
fStack(NULL)
{
}
WizardController::~WizardController()
{
if (fStack != NULL) {
fStack->MakeEmpty();
fStack = NULL;
}
}
void
WizardController::Initialize(WizardView* view)
{
if (fStack == NULL)
_PushState(InitialState());
_ShowPage(view);
}
void
WizardController::Next(WizardView* wizard)
{
wizard->PageCompleted();
if (fStack == NULL)
return;
int state = NextState(fStack->State());
if (state < 0)
return;
_PushState(state);
_ShowPage(wizard);
}
void
WizardController::Previous(WizardView* wizard)
{
wizard->PageCompleted();
if (fStack != NULL) {
StateStack* stack = fStack;
fStack = fStack->Next();
delete stack;
}
_ShowPage(wizard);
}
int32
WizardController::CurrentState() const
{
if (fStack == NULL)
return -1;
return fStack->State();
}
void
WizardController::_PushState(int32 state)
{
fStack = new StateStack(state, fStack);
}
void
WizardController::_ShowPage(WizardView* wizard)
{
if (fStack == NULL)
return;
WizardPageView* page = CreatePage(fStack->State(), wizard);
wizard->SetPage(page);
}
