LimeReport/followTo.patch

diff --git a/limereport/items/lrtextitem.cpp b/limereport/items/lrtextitem.cpp
index 7d61562..041a737 100644
--- a/limereport/items/lrtextitem.cpp
+++ b/limereport/items/lrtextitem.cpp
@@ -31,6 +31,7 @@
 #include <QTextLayout>
 #include <QtScript/QScriptEngine>
 #include <QLocale>
+#include <QMessageBox>
 #include <math.h>
 
 #include "lrpagedesignintf.h"
@@ -57,7 +58,7 @@ namespace LimeReport{
 
 TextItem::TextItem(QObject *owner, QGraphicsItem *parent)
     : ContentItemDesignIntf(xmlTag,owner,parent), m_angle(Angle0), m_trimValue(true), m_allowHTML(false),
-      m_allowHTMLInFields(false)
+      m_allowHTMLInFields(false), m_followTo(""), m_follower(0)
 {
     m_text = new QTextDocument();
 
@@ -265,8 +266,13 @@ void TextItem::updateItemSize(DataSourceManager* dataManager, RenderPass pass, i
         setWidth(m_textSize.width() + fakeMarginSize()*2);
     }
 
-    if ((m_textSize.height()>height()) && (m_autoHeight) ){
-        setHeight(m_textSize.height()+borderLineSize()*2);
+    if (m_textSize.height()>height()) {
+        if (m_autoHeight)
+            setHeight(m_textSize.height()+borderLineSize()*2);
+        else if (hasFollower() && !content().isEmpty()){
+            follower()->setContent(getTextPart(0,height()));
+            setContent(getTextPart(height(),0));
+        }
     }
     BaseDesignIntf::updateItemSize(dataManager, pass, maxHeight);
 }
@@ -353,6 +359,7 @@ void TextItem::setLineSpacing(int value)
 
 void TextItem::initText()
 {
+    if (!m_text) return;
     QTextOption to;
     to.setAlignment(m_alignment);
 
@@ -454,6 +461,66 @@ QString TextItem::formatFieldValue()
     }
 }
 
+QString TextItem::followTo() const
+{
+    return m_followTo;
+}
+
+void TextItem::setFollowTo(const QString &followTo)
+{
+    if (m_followTo != followTo){
+        QString oldValue = m_followTo;
+        m_followTo = followTo;
+        if (!isLoading()){
+            TextItem* fi = scene()->findChild<TextItem*>(followTo);
+            if (fi && initFollower(followTo)){
+                notify("followTo",oldValue,followTo);
+            } else {
+                m_followTo = "";
+                QMessageBox::critical(
+                    0,
+                    tr("Error"),
+                    tr("TextItem \" %1 \" already has folower \" %2 \" ")
+                            .arg(fi->objectName())
+                            .arg(fi->follower()->objectName())
+                );
+                notify("followTo",followTo,"");
+            }
+        }
+    }
+}
+
+void TextItem::setFollower(TextItem *follower)
+{
+    if (!m_follower){
+        m_follower = follower;
+    }
+}
+
+bool TextItem::hasFollower()
+{
+    return m_follower != 0;
+}
+
+bool TextItem::initFollower(QString follower)
+{
+    TextItem* fi = scene()->findChild<TextItem*>(follower);
+    if (fi){
+        if (!fi->hasFollower()){
+            fi->setFollower(this);
+            return true;
+        }
+    }
+    return false;
+}
+
+void TextItem::pageObjectHasBeenLoaded()
+{
+    if (!m_followTo.isEmpty()){
+        initFollower(m_followTo);
+    }
+}
+
 TextItem::ValueType TextItem::valueType() const
 {
     return m_valueType;
@@ -537,6 +604,7 @@ bool TextItem::isNeedUpdateSize(RenderPass pass) const
     Q_UNUSED(pass)
     bool res =  (m_textSize.height()>geometry().height()&&autoHeight()) ||
                 (m_textSize.width()>geometry().width()&&autoWidth()) ||
+                 m_follower ||
                 isNeedExpandContent();
     return res;
 }
@@ -557,6 +625,7 @@ void TextItem::setAlignment(Qt::Alignment value)
 
 void TextItem::expandContent(DataSourceManager* dataManager, RenderPass pass)
 {
+
     QString context=content();
     ExpandType expandType = (allowHTML() && !allowHTMLInFields())?ReplaceHTMLSymbols:NoEscapeSymbols;
     switch(pass){
@@ -575,6 +644,7 @@ void TextItem::expandContent(DataSourceManager* dataManager, RenderPass pass)
     } else {
         setContent(context);
     }
+
 }
 
 void TextItem::setAutoHeight(bool value)
@@ -611,63 +681,79 @@ bool TextItem::canBeSplitted(int height) const
     return height>(m_text->begin().layout()->lineAt(0).height());
 }
 
-BaseDesignIntf *TextItem::cloneUpperPart(int height, QObject *owner, QGraphicsItem *parent)
-{
+QString TextItem::getTextPart(int height, int skipHeight){
     int linesHeight=0;
-    QString tmpText="";
-    TextItem* upperPart = dynamic_cast<TextItem*>(cloneItem(itemMode(),owner,parent));
+    int curLine=0;
+    int textPos=0;
 
-    for (QTextBlock it=m_text->begin();it!=m_text->end();it=it.next()){
-        for (int i=0;i<it.layout()->lineCount();i++){
-          linesHeight+=it.layout()->lineAt(i).height()+lineSpacing();
-          if (linesHeight>(height-(fakeMarginSize()*2+borderLineSize()*2))) {
-              linesHeight-=it.layout()->lineAt(i).height();
-              goto loop_exit;
+    QTextBlock curBlock = m_text->begin();
+    QString resultText="";
+
+    if (skipHeight>0){
+        for (;curBlock!=m_text->end();curBlock=curBlock.next()){
+            for (curLine=0;curLine<curBlock.layout()->lineCount();curLine++){
+                linesHeight+=curBlock.layout()->lineAt(curLine).height()+lineSpacing();
+                if (linesHeight>(skipHeight-(/*fakeMarginSize()*2+*/borderLineSize()*2))) {goto loop_exit;}
+            }
+        }
+        loop_exit:;
+    }
+
+    linesHeight = 0;
+    qDebug()<<curBlock.lineCount();
+    qDebug()<<(curBlock == m_text->end());
+    for (;curBlock!=m_text->end() || curLine<curBlock.lineCount();curBlock=curBlock.next(), curLine=0, resultText+='\n'){
+        for (;curLine<curBlock.layout()->lineCount();curLine++){
+          if (resultText=="") textPos= curBlock.layout()->lineAt(curLine).textStart();
+          linesHeight+=curBlock.layout()->lineAt(curLine).height()+lineSpacing();
+          if ( (height>0) && (linesHeight>(height-(/*fakeMarginSize()*2+*/borderLineSize()*2))) ) {
+              linesHeight-=curBlock.layout()->lineAt(curLine).height();
+              goto loop_exit1;
           }
-          tmpText+=it.text().mid(it.layout()->lineAt(i).textStart(),it.layout()->lineAt(i).textLength())+'\n';
+          resultText+=curBlock.text().mid(curBlock.layout()->lineAt(curLine).textStart(),
+            curBlock.layout()->lineAt(curLine).textLength());
         }
     }
-    loop_exit:
-    tmpText.chop(1);
+    loop_exit1:;
+
+    resultText.chop(1);
 
-    upperPart->setHeight(linesHeight+fakeMarginSize()*2+borderLineSize()*2);
     QScopedPointer<HtmlContext> context(new HtmlContext(m_strText));
-    upperPart->setContent(context->extendTextByTags(tmpText,0));
-    upperPart->initText();
-    return upperPart;
+    return context->extendTextByTags(resultText,textPos);
 }
 
-BaseDesignIntf *TextItem::cloneBottomPart(int height, QObject *owner, QGraphicsItem *parent)
+void TextItem::restoreLinksEvent()
 {
-    TextItem* bottomPart = dynamic_cast<TextItem*>(cloneItem(itemMode(),owner,parent));
-    int linesHeight=0;
-    int curLine=0;
-    QTextBlock curBlock;
-
-    QString tmpText="";
-
-    for (curBlock=m_text->begin();curBlock!=m_text->end();curBlock=curBlock.next()){
-        for (curLine=0;curLine<curBlock.layout()->lineCount();curLine++){
-            linesHeight+=curBlock.layout()->lineAt(curLine).height()+lineSpacing();
-            if (linesHeight>(height-(fakeMarginSize()*2+borderLineSize()*2))) {goto loop_exit;}
+    if (!followTo().isEmpty()){
+        BaseDesignIntf* pi = dynamic_cast<BaseDesignIntf*>(parentItem());
+        if (pi){
+            foreach (BaseDesignIntf* bi, pi->childBaseItems()) {
+                if (bi->patternName().compare(followTo())==0){
+                    TextItem* ti = dynamic_cast<TextItem*>(bi);
+                    if (ti){
+                        ti->setFollower(this);
+                    }
+                }
+            }
         }
     }
-    loop_exit:;
+}
 
-    int textPos=0;
-    for (;curBlock!=m_text->end();curBlock=curBlock.next(),curLine=0){
-        for (;curLine<curBlock.layout()->lineCount();curLine++){
-            if (tmpText=="") textPos= curBlock.layout()->lineAt(curLine).textStart();
-            tmpText+=curBlock.text().mid(curBlock.layout()->lineAt(curLine).textStart(),
-              curBlock.layout()->lineAt(curLine).textLength()) + "\n";
-        }
-    }
-    tmpText.chop(1);
+BaseDesignIntf *TextItem::cloneUpperPart(int height, QObject *owner, QGraphicsItem *parent)
+{
+    TextItem* upperPart = dynamic_cast<TextItem*>(cloneItem(itemMode(),owner,parent));
+    upperPart->setContent(getTextPart(height,0));
+    upperPart->initText();
+    upperPart->setHeight(upperPart->textSize().height()+borderLineSize()*2);
+    return upperPart;
+}
 
-    QScopedPointer<HtmlContext> context(new HtmlContext(m_strText));
-    bottomPart->setContent(context->extendTextByTags(tmpText,textPos));
+BaseDesignIntf *TextItem::cloneBottomPart(int height, QObject *owner, QGraphicsItem *parent)
+{
+    TextItem* bottomPart = dynamic_cast<TextItem*>(cloneItem(itemMode(),owner,parent));
+    bottomPart->setContent(getTextPart(0,height));
     bottomPart->initText();
-    bottomPart->setHeight(bottomPart->m_textSize.height()+borderLineSize()*2);
+    bottomPart->setHeight(bottomPart->textSize().height()+borderLineSize()*2);
     return bottomPart;
 }
 
diff --git a/limereport/items/lrtextitem.h b/limereport/items/lrtextitem.h
index 07c3412..bda15d8 100644
--- a/limereport/items/lrtextitem.h
+++ b/limereport/items/lrtextitem.h
@@ -32,15 +32,16 @@
 #include <QGraphicsTextItem>
 #include <QtGui>
 #include <QLabel>
-#include "lritemdesignintf.h"
-#include <qnamespace.h>
-
 #include <QTextDocument>
 
+#include "lritemdesignintf.h"
+#include "lritemdesignintf.h"
+#include "lrpageinitintf.h"
+
 namespace LimeReport {
 
 class Tag;
-class TextItem : public LimeReport::ContentItemDesignIntf {
+class TextItem : public LimeReport::ContentItemDesignIntf, IPageInit {
     Q_OBJECT
     Q_ENUMS(AutoWidth)
     Q_ENUMS(AngleType)
@@ -66,6 +67,7 @@ class TextItem : public LimeReport::ContentItemDesignIntf {
     Q_PROPERTY(bool allowHTMLInFields READ allowHTMLInFields WRITE setAllowHTMLInFields)
     Q_PROPERTY(QString format READ format WRITE setFormat)
     Q_PROPERTY(ValueType valueType READ valueType WRITE setValueType)
+    Q_PROPERTY(QString followTo READ followTo WRITE setFollowTo)
 public:
 
     enum AutoWidth{NoneAutoWidth,MaxWordLength,MaxStringLength};
@@ -140,12 +142,25 @@ public:
     ValueType valueType() const;
     void setValueType(const ValueType valueType);
 
+    QSizeF textSize(){ return m_textSize;}
+    QString followTo() const;
+    void setFollowTo(const QString &followTo);
+    void setFollower(TextItem* follower);
+    bool hasFollower();
+    TextItem* follower(){ return m_follower;}
+    bool initFollower(QString follower);
+
+    // IPageInit interface
+    void pageObjectHasBeenLoaded();
+
 protected:
     void updateLayout();
     bool isNeedExpandContent() const;
     QString replaceBR(QString text);
     QString replaceReturns(QString text);
     int fakeMarginSize();
+    QString getTextPart(int height, int skipHeight);
+    void restoreLinksEvent();
 private:
     void initText();
     void setTextFont(const QFont &value);
@@ -174,6 +189,8 @@ private:
 
     QString m_format;
     ValueType m_valueType;
+    QString   m_followTo;
+    TextItem* m_follower;
 };
 
 }
diff --git a/limereport/lrbanddesignintf.cpp b/limereport/lrbanddesignintf.cpp
index a55f74c..c7b3dcc 100644
--- a/limereport/lrbanddesignintf.cpp
+++ b/limereport/lrbanddesignintf.cpp
@@ -889,6 +889,7 @@ void BandDesignIntf::updateItemSize(DataSourceManager* dataManager, RenderPass p
     if (borderLines()!=0){
         spaceBorder += borderLineSize();
     }
+    restoreLinks();
     snapshotItemsLayout();
     arrangeSubItems(pass, dataManager);
     if (autoHeight()){
diff --git a/limereport/lrbasedesignintf.cpp b/limereport/lrbasedesignintf.cpp
index 8b632d5..a901997 100644
--- a/limereport/lrbasedesignintf.cpp
+++ b/limereport/lrbasedesignintf.cpp
@@ -76,7 +76,8 @@ BaseDesignIntf::BaseDesignIntf(const QString &storageTypeName, QObject *owner, Q
     m_itemAlign(DesignedItemAlign),
     m_changingItemAlign(false),
     m_borderColor(Qt::black),
-    m_reportSettings(0)
+    m_reportSettings(0),
+    m_patternName("")
 {
     setGeometry(QRectF(0, 0, m_width, m_height));
     if (BaseDesignIntf *item = dynamic_cast<BaseDesignIntf *>(parent)) {
@@ -672,6 +673,16 @@ void BaseDesignIntf::turnOnSelectionMarker(bool value)
     }
 }
 
+QString BaseDesignIntf::patternName() const
+{
+    return m_patternName;
+}
+
+void BaseDesignIntf::setPatternName(const QString &patternName)
+{
+    m_patternName = patternName;
+}
+
 ReportSettings *BaseDesignIntf::reportSettings() const
 {
     return m_reportSettings;
@@ -737,7 +748,7 @@ void BaseDesignIntf::emitObjectNamePropertyChanged(const QString &oldName, const
 
 int BaseDesignIntf::borderLineSize() const
 {
-    return m_borderLineSize;
+    return 0 /*m_borderLineSize*/;
 }
 
 void BaseDesignIntf::setBorderLineSize(int value)
@@ -987,6 +998,19 @@ void BaseDesignIntf::parentChangedEvent(BaseDesignIntf *)
 
 }
 
+void BaseDesignIntf::restoreLinks()
+{
+#ifdef HAVE_QT5
+    foreach(QObject * child, children()) {
+#else
+    foreach(QObject * child, QObject::children()) {
+#endif
+        BaseDesignIntf *childItem = dynamic_cast<BaseDesignIntf *>(child);
+        if (childItem) {childItem->restoreLinks();}
+    }
+    restoreLinksEvent();
+}
+
 QPainterPath BaseDesignIntf::shape() const
 {
     QPainterPath path;
@@ -1229,6 +1253,7 @@ void BaseDesignIntf::collectionLoadFinished(const QString &collectionName)
 BaseDesignIntf *BaseDesignIntf::cloneItem(ItemMode mode, QObject *owner, QGraphicsItem *parent)
 {
     BaseDesignIntf *clone = cloneItemWOChild(mode, owner, parent);
+    clone->setPatternName(this->objectName());
 #ifdef HAVE_QT5
     foreach(QObject * child, children()) {
 #else
diff --git a/limereport/lrbasedesignintf.h b/limereport/lrbasedesignintf.h
index f31bf73..dae9cf4 100644
--- a/limereport/lrbasedesignintf.h
+++ b/limereport/lrbasedesignintf.h
@@ -249,6 +249,8 @@ public:
     ReportSettings* reportSettings() const;
     void setReportSettings(ReportSettings *reportSettings);
     void setZValueProperty(qreal value);
+    QString patternName() const;
+    void setPatternName(const QString &patternName);
 
     Q_INVOKABLE QString setItemWidth(qreal width);
     Q_INVOKABLE QString setItemHeight(qreal height);
@@ -258,6 +260,7 @@ public:
     Q_INVOKABLE qreal getItemPosY();
     Q_INVOKABLE QString setItemPosX(qreal xValue);
     Q_INVOKABLE QString setItemPosY(qreal yValue);
+
 protected:
 
     //ICollectionContainer
@@ -283,6 +286,8 @@ protected:
     virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
     virtual void childAddedEvent(BaseDesignIntf* child);
     virtual void parentChangedEvent(BaseDesignIntf*);
+    void restoreLinks();
+    virtual void restoreLinksEvent(){}
 
     void drawTopLine(QPainter *painter, QRectF rect) const;
     void drawBootomLine(QPainter *painter, QRectF rect) const;
@@ -359,6 +364,7 @@ private:
     bool    m_changingItemAlign;
     QColor  m_borderColor;
     ReportSettings* m_reportSettings;
+    QString m_patternName;
 signals:
     void geometryChanged(QObject* object, QRectF newGeometry, QRectF oldGeometry);
     void posChanged(QObject* object, QPointF newPos, QPointF oldPos);
diff --git a/limereport/lrreportrender.cpp b/limereport/lrreportrender.cpp
index 42dacef..3d39635 100644
--- a/limereport/lrreportrender.cpp
+++ b/limereport/lrreportrender.cpp
@@ -204,7 +204,6 @@ void ReportRender::renderPage(PageDesignIntf* patternPage)
         resetPageNumber(PageReset);
 
     }
-    //m_pageCount = 1;
     m_renderCanceled = false;
     BandDesignIntf* reportFooter = m_patternPageItem->bandByType(BandDesignIntf::ReportFooter);
     m_reportFooterHeight = 0;
@@ -225,9 +224,7 @@ void ReportRender::renderPage(PageDesignIntf* patternPage)
             QMessageBox::critical(0,tr("Error"),exception.what());
             return;
         }
-
         clearPageMap();
-
         startNewPage();
 
         renderBand(m_patternPageItem->bandByType(BandDesignIntf::ReportHeader),StartNewPageAsNeeded);
@@ -543,15 +540,21 @@ void ReportRender::renderPageFooter(PageItemDesignIntf *patternPage)
 
 void ReportRender::renderPageItems(PageItemDesignIntf* patternPage)
 {
+    QList<BaseDesignIntf*> pageItems;
     foreach (BaseDesignIntf* item, patternPage->childBaseItems()) {
         ItemDesignIntf* id = dynamic_cast<ItemDesignIntf*>(item);
         if (id&&id->itemLocation()==ItemDesignIntf::Page){
             BaseDesignIntf* cloneItem = item->cloneItem(m_renderPageItem->itemMode(),
                                                         m_renderPageItem,
                                                         m_renderPageItem);
-            cloneItem->updateItemSize(m_datasources);
+            pageItems.append(cloneItem);
+            //cloneItem->updateItemSize(m_datasources);
         }
     }
+    m_renderPageItem->restoreLinks();
+    foreach(BaseDesignIntf* item, pageItems){
+        item->updateItemSize(m_datasources);
+    }
 }
 
 qreal ReportRender::calcPageFooterHeight(PageItemDesignIntf *patternPage)
@@ -978,7 +981,6 @@ void ReportRender::startNewPage()
         renderBand(band);
     }
     checkLostHeadersOnPrevPage();
-
     pasteGroups();
     renderPageItems(m_patternPageItem);
 }