llmodaldialog.cpp

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#include "linden_common.h"

#include "llmodaldialog.h"

#include "llfocusmgr.h"
#include "v4color.h"
#include "v2math.h"
#include "llui.h"
#include "llwindow.h"
#include "llkeyboard.h"

// static
std::list<LLModalDialog*> LLModalDialog::sModalStack;

LLModalDialog::LLModalDialog( const LLString& title, S32 width, S32 height, BOOL modal )
        : LLFloater( "modal container",
                                 LLRect( 0, height, width, 0 ),
                                 title,
                                 FALSE, // resizable
                                 DEFAULT_MIN_WIDTH, DEFAULT_MIN_HEIGHT,
                                 FALSE, // drag_on_left
                                 modal ? FALSE : TRUE, // minimizable
                                 modal ? FALSE : TRUE, // close button
                                 TRUE), // bordered
          mModal( modal )
{
        setVisible( FALSE );
        setBackgroundVisible(TRUE);
        setBackgroundOpaque(TRUE);
        centerOnScreen(); // default position
}

LLModalDialog::~LLModalDialog()
{
        // don't unlock focus unless we have it
        if (gFocusMgr.childHasKeyboardFocus(this))
        {
                gFocusMgr.unlockFocus();
        }
}

void LLModalDialog::reshape(S32 width, S32 height, BOOL called_from_parent)
{
        LLFloater::reshape(width, height, called_from_parent);
        centerOnScreen();
}

void LLModalDialog::startModal()
{
        if (mModal)
        {
                // If Modal, Hide the active modal dialog
                if (!sModalStack.empty())
                {
                        LLModalDialog* front = sModalStack.front();
                        front->setVisible(FALSE);
                }
        
                // This is a modal dialog.  It sucks up all mouse and keyboard operations.
                gFocusMgr.setMouseCapture( this );
                gFocusMgr.setTopCtrl( this );
                setFocus(TRUE);

                sModalStack.push_front( this );
        }

        setVisible( TRUE );
}

void LLModalDialog::stopModal()
{
        gFocusMgr.unlockFocus();
        gFocusMgr.releaseFocusIfNeeded( this );

        if (mModal)
        {
                std::list<LLModalDialog*>::iterator iter = std::find(sModalStack.begin(), sModalStack.end(), this);
                if (iter != sModalStack.end())
                {
                        sModalStack.erase(iter);
                }
                else
                {
                        llwarns << "LLModalDialog::stopModal not in list!" << llendl;
                }
        }
        if (!sModalStack.empty())
        {
                LLModalDialog* front = sModalStack.front();
                front->setVisible(TRUE);
        }
}


void LLModalDialog::setVisible( BOOL visible )
{
        if (mModal)
        {
                if( visible )
                {
                        // This is a modal dialog.  It sucks up all mouse and keyboard operations.
                        gFocusMgr.setMouseCapture( this );

                        // The dialog view is a root view
                        gFocusMgr.setTopCtrl( this );
                        setFocus( TRUE );
                }
                else
                {
                        gFocusMgr.releaseFocusIfNeeded( this );
                }
        }
        
        LLFloater::setVisible( visible );
}

BOOL LLModalDialog::handleMouseDown(S32 x, S32 y, MASK mask)
{
        if (!LLFloater::handleMouseDown(x, y, mask))
        {
                if (mModal)
                {
                        // Click was outside the panel
                        make_ui_sound("UISndInvalidOp");
                }
        }
        return TRUE;
}

BOOL LLModalDialog::handleHover(S32 x, S32 y, MASK mask)                
{ 
        if( childrenHandleHover(x, y, mask) == NULL )
        {
                getWindow()->setCursor(UI_CURSOR_ARROW);
                lldebugst(LLERR_USER_INPUT) << "hover handled by " << getName() << llendl;              
        }
        return TRUE;
}

BOOL LLModalDialog::handleMouseUp(S32 x, S32 y, MASK mask)
{
        childrenHandleMouseUp(x, y, mask);
        return TRUE;
}

BOOL LLModalDialog::handleScrollWheel(S32 x, S32 y, S32 clicks)
{
        childrenHandleScrollWheel(x, y, clicks);
        return TRUE;
}

BOOL LLModalDialog::handleDoubleClick(S32 x, S32 y, MASK mask)
{
        if (!LLFloater::handleDoubleClick(x, y, mask))
        {
                // Click outside the panel
                make_ui_sound("UISndInvalidOp");
        }
        return TRUE;
}

BOOL LLModalDialog::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
        childrenHandleRightMouseDown(x, y, mask);
        return TRUE;
}


BOOL LLModalDialog::handleKeyHere(KEY key, MASK mask, BOOL called_from_parent )
{
        childrenHandleKey(key, mask);

        LLFloater::handleKeyHere(key, mask, called_from_parent );

        if (mModal)
        {
                // Suck up all keystokes except CTRL-Q.
                BOOL is_quit = ('Q' == key) && (MASK_CONTROL == mask);
                return !is_quit;
        }
        else
        {
                // don't process escape key until message box has been on screen a minimal amount of time
                // to avoid accidentally destroying the message box when user is hitting escape at the time it appears
                BOOL enough_time_elapsed = mVisibleTime.getElapsedTimeF32() > 1.0f;
                if (enough_time_elapsed && key == KEY_ESCAPE)
                {
                        close();
                        return TRUE;
                }
                return FALSE;
        }       
}

void LLModalDialog::onClose(bool app_quitting)
{
        stopModal();
        LLFloater::onClose(app_quitting);
}

// virtual
void LLModalDialog::draw()
{
        if (getVisible())
        {
                LLColor4 shadow_color = LLUI::sColorsGroup->getColor("ColorDropShadow");
                S32 shadow_lines = LLUI::sConfigGroup->getS32("DropShadowFloater");

                gl_drop_shadow( 0, mRect.getHeight(), mRect.getWidth(), 0,
                        shadow_color, shadow_lines);

                LLFloater::draw();

                if (mModal)
                {
                        // If we've lost focus to a non-child, get it back ASAP.
                        if( gFocusMgr.getTopCtrl() != this )
                        {
                                gFocusMgr.setTopCtrl( this );
                        }

                        if( !gFocusMgr.childHasKeyboardFocus( this ) )
                        {
                                setFocus(TRUE);
                        }

                        if( !gFocusMgr.childHasMouseCapture( this ) )
                        {
                                gFocusMgr.setMouseCapture( this );
                        }
                }
        }
}

void LLModalDialog::centerOnScreen()
{
        LLVector2 window_size = LLUI::getWindowSize();

        S32 dialog_left = (llround(window_size.mV[VX]) - mRect.getWidth()) / 2;
        S32 dialog_bottom = (llround(window_size.mV[VY]) - mRect.getHeight()) / 2;

        translate( dialog_left - mRect.mLeft, dialog_bottom - mRect.mBottom );
}


// static 
void LLModalDialog::onAppFocusLost()
{
        if( !sModalStack.empty() )
        {
                LLModalDialog* instance = LLModalDialog::sModalStack.front();
                if( gFocusMgr.childHasMouseCapture( instance ) )
                {
                        gFocusMgr.setMouseCapture( NULL );
                }

                if( gFocusMgr.childHasKeyboardFocus( instance ) )
                {
                        gFocusMgr.setKeyboardFocus( NULL, NULL );
                }
        }
}

// static 
void LLModalDialog::onAppFocusGained()
{
        if( !sModalStack.empty() )
        {
                LLModalDialog* instance = LLModalDialog::sModalStack.front();

                // This is a modal dialog.  It sucks up all mouse and keyboard operations.
                gFocusMgr.setMouseCapture( instance );
                instance->setFocus(TRUE);
                gFocusMgr.setTopCtrl( instance );

                instance->centerOnScreen();
        }
}

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