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haiku-beta6/src/libs/alm/Tab.cpp
T

154 lines
2.3 KiB
C++

/*
* Copyright 2011, Clemens Zeidler <[email protected]>
* Distributed under the terms of the MIT License.
*/
#include <Tab.h>
#include <ALMLayout.h>
using std::nothrow;
struct XTab::BALMLayoutList {
BALMLayoutList(BALMLayout* _layout, BALMLayoutList* _next = NULL)
:
next(_next),
layout(_layout)
{
}
~BALMLayoutList()
{
delete next;
}
bool HasLayout(BALMLayout* search)
{
if (layout == search)
return true;
return next ? next->HasLayout(search) : false;
}
BALMLayoutList* Remove(BALMLayout* remove)
{
if (layout == remove) {
BALMLayoutList* _next = next;
delete this;
return _next;
}
if (next)
next = next->Remove(remove);
return this;
}
BALMLayoutList* next;
BALMLayout* layout;
};
XTab::XTab(BALMLayout* layout)
:
Variable(layout->Solver()),
fLayouts(new BALMLayoutList(layout))
{
}
XTab::~XTab()
{
BALMLayoutList* layouts = fLayouts;
while (layouts) {
layouts->layout->fXTabList.RemoveItem(this);
layouts = layouts->next;
}
delete fLayouts;
}
bool
XTab::IsInLayout(BALMLayout* layout)
{
return fLayouts->HasLayout(layout);
}
bool
XTab::AddedToLayout(BALMLayout* layout)
{
BALMLayoutList* newHead = new (nothrow) BALMLayoutList(layout, fLayouts);
if (newHead == NULL)
return false;
fLayouts = newHead;
return true;
}
void
XTab::LayoutLeaving(BALMLayout* layout)
{
fLayouts = fLayouts->Remove(layout);
}
bool
XTab::IsSuitableFor(BALMLayout* layout)
{
return (fLayouts->layout->Solver() == layout->Solver());
}
YTab::YTab(BALMLayout* layout)
:
Variable(layout->Solver()),
fLayouts(new XTab::BALMLayoutList(layout))
{
}
YTab::~YTab()
{
XTab::BALMLayoutList* layouts = fLayouts;
while (layouts) {
layouts->layout->fYTabList.RemoveItem(this);
layouts = layouts->next;
}
delete fLayouts;
}
bool
YTab::IsInLayout(BALMLayout* layout)
{
return fLayouts->HasLayout(layout);
}
bool
YTab::AddedToLayout(BALMLayout* layout)
{
XTab::BALMLayoutList* newHead
= new (nothrow) XTab::BALMLayoutList(layout, fLayouts);
if (newHead == NULL)
return false;
fLayouts = newHead;
return true;
}
void
YTab::LayoutLeaving(BALMLayout* layout)
{
fLayouts = fLayouts->Remove(layout);
}
bool
YTab::IsSuitableFor(BALMLayout* layout)
{
return (fLayouts->layout->Solver() == layout->Solver());
}