LOK: Implement parts for Writer too.

In Writer, the meaning of 'parts' is a bit different than in Calc or Impress.
In Writer, the parts mean pages, and the document does not give a completely
different view, the cursor just jumps to the given page.

It is up to the client to follow the cursor appropriately to have the desired
effect.

Change-Id: I56b3264e0340cd639bdabfa92b74b52bd1f391a5
diff --git a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
index 46d3176..73db976 100644
--- a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
+++ b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
@@ -359,6 +359,13 @@ static void populatePartSelector()
                              lok_doc_view_get_part( LOK_DOC_VIEW(pDocView) ) );
}

static void signalSize(LOKDocView* /*pLOKDocView*/, gpointer /*pData*/)
{
    g_bPartSelectorBroadcast = false;
    populatePartSelector();
    g_bPartSelectorBroadcast = true;
}

static void changePart( GtkWidget* pSelector, gpointer /* pItem */ )
{
    int nPart = gtk_combo_box_get_active( GTK_COMBO_BOX(pSelector) );
@@ -567,6 +574,7 @@ int main( int argc, char* argv[] )
    g_signal_connect(pDocView, "command-changed", G_CALLBACK(signalCommand), NULL);
    g_signal_connect(pDocView, "search-not-found", G_CALLBACK(signalSearch), NULL);
    g_signal_connect(pDocView, "part-changed", G_CALLBACK(signalPart), NULL);
    g_signal_connect(pDocView, "size-changed", G_CALLBACK(signalSize), NULL);
    g_signal_connect(pDocView, "hyperlink-clicked", G_CALLBACK(signalHyperlink), NULL);


diff --git a/libreofficekit/source/gtk/lokdocview.cxx b/libreofficekit/source/gtk/lokdocview.cxx
index d13fb9b..b864d6f 100644
--- a/libreofficekit/source/gtk/lokdocview.cxx
+++ b/libreofficekit/source/gtk/lokdocview.cxx
@@ -114,6 +114,7 @@ enum
    COMMAND_CHANGED,
    SEARCH_NOT_FOUND,
    PART_CHANGED,
    SIZE_CHANGED,
    HYPERLINK_CLICKED,

    LAST_SIGNAL
@@ -581,6 +582,8 @@ callback (gpointer pData)
        gtk_widget_set_size_request(GTK_WIDGET(pDocView),
                                    twipToPixel(priv->m_nDocumentWidthTwips, priv->m_fZoom),
                                    twipToPixel(priv->m_nDocumentHeightTwips, priv->m_fZoom));

        g_signal_emit(pDocView, doc_view_signals[SIZE_CHANGED], 0, NULL);
    }
    break;
    case LOK_CALLBACK_SET_PART:
@@ -1707,6 +1710,21 @@ static void lok_doc_view_class_init (LOKDocViewClass* pClass)
                     G_TYPE_INT);

    /**
     * LOKDocView::size-changed:
     * @pDocView: the #LOKDocView on which the signal is emitted
     * @aCommand: NULL, we just notify that want to notify the UI elements that are interested.
     */
    doc_view_signals[SIZE_CHANGED] =
        g_signal_new("size-changed",
                     G_TYPE_FROM_CLASS(pGObjectClass),
                     G_SIGNAL_RUN_FIRST,
                     0,
                     NULL, NULL,
                     g_cclosure_marshal_VOID__VOID,
                     G_TYPE_NONE, 1,
                     G_TYPE_INT);

    /**
     * LOKDocView::hyperlinked-clicked:
     * @pDocView: the #LOKDocView on which the signal is emitted
     * @aHyperlink: the URI which the application should handle
diff --git a/sw/inc/unotxdoc.hxx b/sw/inc/unotxdoc.hxx
index 5627523..612ea7c 100644
--- a/sw/inc/unotxdoc.hxx
+++ b/sw/inc/unotxdoc.hxx
@@ -406,6 +406,14 @@ public:
                            long nTileHeight ) SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::getDocumentSize().
    virtual Size getDocumentSize() SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::setPart().
    virtual void setPart(int nPart) SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::getParts().
    virtual int getParts() SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::getPart().
    virtual int getPart() SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::getPartName().
    virtual OUString getPartName(int nPart) SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::initializeForTiledRendering().
    virtual void initializeForTiledRendering() SAL_OVERRIDE;
    /// @see vcl::ITiledRenderable::registerCallback().
diff --git a/sw/inc/viscrs.hxx b/sw/inc/viscrs.hxx
index 159fb2f..525b551 100644
--- a/sw/inc/viscrs.hxx
+++ b/sw/inc/viscrs.hxx
@@ -43,6 +43,9 @@ class SwVisCrsr
    vcl::Cursor m_aTextCrsr;
    const SwCrsrShell* m_pCrsrShell;

    /// For LibreOfficeKit only - remember what page we were at the last time.
    sal_uInt16 m_nPageLastTime;

    void _SetPosAndShow();

public:
diff --git a/sw/source/core/crsr/viscrs.cxx b/sw/source/core/crsr/viscrs.cxx
index 44805c6..6ff4596 100644
--- a/sw/source/core/crsr/viscrs.cxx
+++ b/sw/source/core/crsr/viscrs.cxx
@@ -67,6 +67,7 @@ MapMode* SwSelPaintRects::s_pMapMode = 0;
// Starting from here: classes / methods for the non-text-cursor
SwVisCrsr::SwVisCrsr( const SwCrsrShell * pCShell )
    : m_pCrsrShell( pCShell )
    , m_nPageLastTime(0)
{
    pCShell->GetWin()->SetCursor( &m_aTextCrsr );
    m_bIsVisible = m_aTextCrsr.IsVisible();
@@ -179,6 +180,17 @@ void SwVisCrsr::_SetPosAndShow()

    if (m_pCrsrShell->isTiledRendering())
    {
        // notify about page number change (if that happened)
        sal_uInt16 nPage, nVirtPage;
        const_cast<SwCrsrShell*>(m_pCrsrShell)->GetPageNum(nPage, nVirtPage);
        if (nPage != m_nPageLastTime)
        {
            m_nPageLastTime = nPage;
            OString aPayload = OString::number(nPage - 1);
            m_pCrsrShell->libreOfficeKitCallback(LOK_CALLBACK_SET_PART, aPayload.getStr());
        }

        // notify about the cursor position & size
        Rectangle aSVRect(aRect.Pos().getX(), aRect.Pos().getY(), aRect.Pos().getX() + aRect.SSize().Width(), aRect.Pos().getY() + aRect.SSize().Height());
        OString sRect = aSVRect.toString();
        m_pCrsrShell->libreOfficeKitCallback(LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR, sRect.getStr());
diff --git a/sw/source/uibase/uno/unotxdoc.cxx b/sw/source/uibase/uno/unotxdoc.cxx
index d453ad8..aceb6f4 100644
--- a/sw/source/uibase/uno/unotxdoc.cxx
+++ b/sw/source/uibase/uno/unotxdoc.cxx
@@ -3152,6 +3152,50 @@ Size SwXTextDocument::getDocumentSize()
                aDocSize.Height() + 2L * DOCUMENTBORDER);
}

void SwXTextDocument::setPart(int nPart)
{
    SolarMutexGuard aGuard;

    SwWrtShell* pWrtShell = pDocShell->GetWrtShell();
    if (!pWrtShell)
        return;

    pWrtShell->GotoPage(nPart + 1, true);
}

int SwXTextDocument::getParts()
{
    SolarMutexGuard aGuard;

    SwWrtShell* pWrtShell = pDocShell->GetWrtShell();
    if (!pWrtShell)
        return 0;

    return pWrtShell->GetPageCnt();
}

int SwXTextDocument::getPart()
{
    SolarMutexGuard aGuard;

    SwWrtShell* pWrtShell = pDocShell->GetWrtShell();
    if (!pWrtShell)
        return 0;

    sal_uInt16 nPage, nLogPage;
    OUString sDisplay;
    pWrtShell->GetPageNumber(-1, pWrtShell->IsCrsrVisible(), nPage, nLogPage, sDisplay);

    return nPage - 1;
}

OUString SwXTextDocument::getPartName(int nPart)
{
    SolarMutexGuard aGuard;

    return OUString(SW_RES(STR_PAGE)) + OUString::number(nPart + 1);
}

void SwXTextDocument::initializeForTiledRendering()
{
    SolarMutexGuard aGuard;