433 lines
11 KiB
C++
433 lines
11 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include <assert.h>
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#include <vgui/ISurface.h>
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#include <vgui/IVGui.h>
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#include <vgui/IPanel.h>
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#include <vgui/VGUI.h>
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#include <KeyValues.h>
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#include <tier0/dbg.h>
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#include <vgui_controls/Controls.h>
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#include <vgui_controls/FocusNavGroup.h>
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#include <vgui_controls/Panel.h>
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// memdbgon must be the last include file in a .cpp file!!!
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#include <tier0/memdbgon.h>
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using namespace vgui;
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//-----------------------------------------------------------------------------
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// Purpose: Constructor
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// Input : *panel - parent panel
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//-----------------------------------------------------------------------------
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FocusNavGroup::FocusNavGroup(Panel *panel) : _mainPanel(panel)
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{
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_currentFocus = NULL;
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_topLevelFocus = false;
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_defaultButton = NULL;
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_currentDefaultButton = NULL;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Destructor
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//-----------------------------------------------------------------------------
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FocusNavGroup::~FocusNavGroup()
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{
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}
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//-----------------------------------------------------------------------------
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// Purpose: Sets the focus to the previous panel in the tab order
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// Input : *panel - panel currently with focus
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//-----------------------------------------------------------------------------
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bool FocusNavGroup::RequestFocusPrev(VPANEL panel)
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{
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if(panel==0)
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return false;
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_currentFocus = NULL;
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int newPosition = 9999999;
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if (panel)
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{
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newPosition = ipanel()->GetTabPosition(panel);
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}
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bool bFound = false;
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bool bRepeat = true;
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Panel *best = NULL;
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while (1)
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{
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newPosition--;
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if (newPosition > 0)
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{
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int bestPosition = 0;
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// look for the next tab position
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for (int i = 0; i < _mainPanel->GetChildCount(); i++)
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{
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Panel *child = _mainPanel->GetChild(i);
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if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
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{
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int tabPosition = child->GetTabPosition();
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if (tabPosition == newPosition)
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{
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// we've found the right tab
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best = child;
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bestPosition = newPosition;
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// don't loop anymore since we've found the correct panel
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break;
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}
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else if (tabPosition < newPosition && tabPosition > bestPosition)
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{
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// record the match since this is the closest so far
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bestPosition = tabPosition;
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best = child;
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}
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}
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}
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if (!bRepeat)
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break;
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if (best)
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break;
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}
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else
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{
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// reset new position for next loop
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newPosition = 9999999;
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}
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// haven't found an item
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if (!_topLevelFocus)
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{
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// check to see if we should push the focus request up
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if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
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{
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// we're not a top level panel, so forward up the request instead of looping
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if (ipanel()->RequestFocusPrev(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
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{
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bFound = true;
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SetCurrentDefaultButton(NULL);
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break;
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}
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}
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}
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// not found an item, loop back
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newPosition = 9999999;
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bRepeat = false;
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}
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if (best)
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{
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_currentFocus = best->GetVPanel();
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best->RequestFocus(-1);
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bFound = true;
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if (!CanButtonBeDefault(best->GetVPanel()))
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{
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if (_defaultButton)
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{
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SetCurrentDefaultButton(_defaultButton);
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}
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else
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{
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SetCurrentDefaultButton(NULL);
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// we need to ask the parent to set its default button
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if (_mainPanel->GetVParent())
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{
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ivgui()->PostMessage(_mainPanel->GetVParent(), new KeyValues("FindDefaultButton"), NULL);
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}
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}
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}
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else
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{
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SetCurrentDefaultButton(best->GetVPanel());
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}
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}
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return bFound;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Sets the focus to the previous panel in the tab order
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// Input : *panel - panel currently with focus
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//-----------------------------------------------------------------------------
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bool FocusNavGroup::RequestFocusNext(VPANEL panel)
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{
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// basic recursion guard, in case user has set up a bad focus hierarchy
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static int stack_depth = 0;
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stack_depth++;
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_currentFocus = NULL;
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int newPosition = 0;
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if (panel)
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{
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newPosition = ipanel()->GetTabPosition(panel);
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}
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bool bFound = false;
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bool bRepeat = true;
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Panel *best = NULL;
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while (1)
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{
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newPosition++;
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int bestPosition = 999999;
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// look for the next tab position
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for (int i = 0; i < _mainPanel->GetChildCount(); i++)
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{
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Panel *child = _mainPanel->GetChild(i);
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if ( !child )
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continue;
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if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
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{
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int tabPosition = child->GetTabPosition();
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if (tabPosition == newPosition)
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{
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// we've found the right tab
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best = child;
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bestPosition = newPosition;
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// don't loop anymore since we've found the correct panel
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break;
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}
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else if (tabPosition > newPosition && tabPosition < bestPosition)
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{
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// record the match since this is the closest so far
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bestPosition = tabPosition;
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best = child;
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}
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}
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}
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if (!bRepeat)
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break;
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if (best)
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break;
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// haven't found an item
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// check to see if we should push the focus request up
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if (!_topLevelFocus)
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{
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if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
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{
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// we're not a top level panel, so forward up the request instead of looping
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if (stack_depth < 15)
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{
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if (ipanel()->RequestFocusNext(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
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{
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bFound = true;
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SetCurrentDefaultButton(NULL);
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break;
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}
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// if we find one then we break, otherwise we loop
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}
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}
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}
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// loop back
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newPosition = 0;
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bRepeat = false;
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}
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if (best)
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{
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_currentFocus = best->GetVPanel();
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best->RequestFocus(1);
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bFound = true;
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if (!CanButtonBeDefault(best->GetVPanel()))
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{
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if (_defaultButton)
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{
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SetCurrentDefaultButton(_defaultButton);
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}
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else
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{
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SetCurrentDefaultButton(NULL);
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// we need to ask the parent to set its default button
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if (_mainPanel->GetVParent())
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{
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ivgui()->PostMessage(_mainPanel->GetVParent(), new KeyValues("FindDefaultButton"), NULL);
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}
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}
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}
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else
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{
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SetCurrentDefaultButton(best->GetVPanel());
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}
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}
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stack_depth--;
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return bFound;
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}
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//-----------------------------------------------------------------------------
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// Purpose: sets the panel that owns this FocusNavGroup to be the root in the focus traversal heirarchy
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//-----------------------------------------------------------------------------
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void FocusNavGroup::SetFocusTopLevel(bool state)
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{
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_topLevelFocus = state;
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}
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//-----------------------------------------------------------------------------
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// Purpose: sets panel which receives input when ENTER is hit
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//-----------------------------------------------------------------------------
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void FocusNavGroup::SetDefaultButton(Panel *panel)
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{
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VPANEL vpanel = panel ? panel->GetVPanel() : NULL;
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if ( vpanel == _defaultButton.Get() )
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return;
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// Assert(CanButtonBeDefault(vpanel));
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_defaultButton = vpanel;
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SetCurrentDefaultButton(_defaultButton);
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}
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//-----------------------------------------------------------------------------
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// Purpose: sets panel which receives input when ENTER is hit
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//-----------------------------------------------------------------------------
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void FocusNavGroup::SetCurrentDefaultButton(VPANEL panel, bool sendCurrentDefaultButtonMessage)
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{
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if (panel == _currentDefaultButton.Get())
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return;
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if ( sendCurrentDefaultButtonMessage && _currentDefaultButton.Get() != 0)
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{
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ivgui()->PostMessage(_currentDefaultButton, new KeyValues("SetAsCurrentDefaultButton", "state", 0), NULL);
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}
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_currentDefaultButton = panel;
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if ( sendCurrentDefaultButtonMessage && _currentDefaultButton.Get() != 0)
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{
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ivgui()->PostMessage(_currentDefaultButton, new KeyValues("SetAsCurrentDefaultButton", "state", 1), NULL);
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: sets panel which receives input when ENTER is hit
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//-----------------------------------------------------------------------------
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VPANEL FocusNavGroup::GetCurrentDefaultButton()
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{
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return _currentDefaultButton;
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}
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//-----------------------------------------------------------------------------
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// Purpose: sets panel which receives input when ENTER is hit
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//-----------------------------------------------------------------------------
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VPANEL FocusNavGroup::GetDefaultButton()
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{
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return _defaultButton;
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}
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//-----------------------------------------------------------------------------
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// Purpose: finds the panel which is activated by the specified key
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// Input : code - the keycode of the hotkey
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// Output : Panel * - NULL if no panel found
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//-----------------------------------------------------------------------------
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Panel *FocusNavGroup::FindPanelByHotkey(wchar_t key)
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{
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for (int i = 0; i < _mainPanel->GetChildCount(); i++)
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{
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Panel *child = _mainPanel->GetChild(i);
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if ( !child )
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continue;
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Panel *hot = child->HasHotkey(key);
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if (hot && hot->IsVisible() && hot->IsEnabled())
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{
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return hot;
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}
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}
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return NULL;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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Panel *FocusNavGroup::GetDefaultPanel()
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{
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for (int i = 0; i < _mainPanel->GetChildCount(); i++)
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{
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Panel *child = _mainPanel->GetChild(i);
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if ( !child )
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continue;
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if (child->GetTabPosition() == 1)
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{
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return child;
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}
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}
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return NULL; // no specific panel set
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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Panel *FocusNavGroup::GetCurrentFocus()
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{
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return _currentFocus ? ipanel()->GetPanel(_currentFocus, vgui::GetControlsModuleName()) : NULL;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Sets the current focus
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//-----------------------------------------------------------------------------
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VPANEL FocusNavGroup::SetCurrentFocus(VPANEL focus, VPANEL defaultPanel)
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{
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_currentFocus = focus;
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// if we haven't found a default panel yet, let's see if we know of one
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if (defaultPanel == 0)
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{
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// can this focus itself by the default
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if (CanButtonBeDefault(focus))
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{
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defaultPanel = focus;
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}
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else if (_defaultButton) // do we know of a default button
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{
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defaultPanel = _defaultButton;
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}
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}
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SetCurrentDefaultButton(defaultPanel);
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return defaultPanel;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Returns true if the specified panel can be the default
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//-----------------------------------------------------------------------------
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bool FocusNavGroup::CanButtonBeDefault(VPANEL panel)
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{
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if( panel == 0 )
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return false;
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KeyValues *data = new KeyValues("CanBeDefaultButton");
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bool bResult = false;
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if (ipanel()->RequestInfo(panel, data))
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{
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bResult = (data->GetInt("result") == 1);
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}
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data->deleteThis();
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return bResult;
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} |