diff widgets/CSVFormatDialog.cpp @ 561:aced8ec09bc8

* Complete the overhaul of CSV file import; now you can pick the purpose for
  each column in the file, and SV should do the rest.  The most significant
  practical improvement here is that we can now handle files in which time
  and duration do not necessarily appear in known columns.

--- a/widgets/CSVFormatDialog.cpp	Fri Jul 16 16:51:39 2010 +0000
+++ b/widgets/CSVFormatDialog.cpp	Mon Jul 19 17:08:56 2010 +0000
@@ -15,6 +15,8 @@
 
 #include "CSVFormatDialog.h"
 
+#include "layer/LayerFactory.h"
+
 #include <QFrame>
 #include <QGridLayout>
 #include <QPushButton>
@@ -45,6 +47,7 @@
     exampleFrame->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
     exampleFrame->setLineWidth(2);
     QGridLayout *exampleLayout = new QGridLayout;
+    exampleLayout->setSpacing(4);
     exampleFrame->setLayout(exampleLayout);
 
     QPalette palette = exampleFrame->palette();
@@ -52,9 +55,10 @@
     exampleFrame->setPalette(palette);
 
     QFont fp;
-    fp.setFixedPitch(true);
-    fp.setStyleHint(QFont::TypeWriter);
-    fp.setFamily("Monospaced");
+    fp.setPointSize(fp.pointSize() * 0.9);
+//    fp.setFixedPitch(true);
+//    fp.setStyleHint(QFont::TypeWriter);
+//    fp.setFamily("Monospaced");
     
     int columns = format.getColumnCount();
     QList<QStringList> example = m_format.getExample();
@@ -82,6 +86,7 @@
                 label->setText(example[j][i]);
                 label->setFont(fp);
                 label->setPalette(palette);
+                label->setIndent(8);
                 exampleLayout->addWidget(label, j+1, i);
             }
         }
@@ -91,18 +96,6 @@
     layout->setColumnStretch(3, 10);
     layout->setRowStretch(row++, 10);
 
-    layout->addWidget(new QLabel(tr("Each row describes:")), row, 0);
-
-    m_modelTypeCombo = new QComboBox;
-    m_modelTypeCombo->addItem(tr("A point in time"));
-    m_modelTypeCombo->addItem(tr("A value at a time"));
-    m_modelTypeCombo->addItem(tr("A value across a time range"));
-    m_modelTypeCombo->addItem(tr("A set of values"));
-    layout->addWidget(m_modelTypeCombo, row++, 1, 1, 2);
-    connect(m_modelTypeCombo, SIGNAL(activated(int)),
-	    this, SLOT(modelTypeChanged(int)));
-    m_modelTypeCombo->setCurrentIndex(int(m_format.getModelType()));
-
     layout->addWidget(new QLabel(tr("Timing is specified:")), row, 0);
     
     m_timingTypeCombo = new QComboBox;
@@ -158,6 +151,12 @@
     connect(m_windowSizeCombo, SIGNAL(editTextChanged(QString)),
 	    this, SLOT(windowSizeChanged(QString)));
 
+    m_modelLabel = new QLabel;
+    QFont f(m_modelLabel->font());
+    f.setItalic(true);
+    m_modelLabel->setFont(f);
+    layout->addWidget(m_modelLabel, row++, 0, 1, 4);
+
     QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
                                                 QDialogButtonBox::Cancel);
     layout->addWidget(bb, row++, 0, 1, 4);
@@ -166,8 +165,8 @@
 
     setLayout(layout);
 
-    modelTypeChanged(m_modelTypeCombo->currentIndex());
     timingTypeChanged(m_timingTypeCombo->currentIndex());
+    updateModelLabel();
 }
 
 CSVFormatDialog::~CSVFormatDialog()
@@ -181,9 +180,27 @@
 }
 
 void
-CSVFormatDialog::modelTypeChanged(int type)
+CSVFormatDialog::updateModelLabel()
 {
-    m_format.setModelType((CSVFormat::ModelType)type);
+    LayerFactory *f = LayerFactory::getInstance();
+
+    QString s;
+    switch (m_format.getModelType()) {
+    case CSVFormat::OneDimensionalModel:
+        s = f->getLayerPresentationName(LayerFactory::TimeInstants);
+        break;
+    case CSVFormat::TwoDimensionalModel:
+        s = f->getLayerPresentationName(LayerFactory::TimeValues);
+        break; 
+    case CSVFormat::TwoDimensionalModelWithDuration:
+        s = f->getLayerPresentationName(LayerFactory::Regions);
+        break;
+    case CSVFormat::ThreeDimensionalModel:
+        s = f->getLayerPresentationName(LayerFactory::Colour3DPlot);
+        break;
+    }   
+
+    m_modelLabel->setText("\n" + QString("Data will be displayed in a %1 layer.").arg(s));
 }
 
 void
@@ -237,23 +254,87 @@
 }
 
 void
-CSVFormatDialog::columnPurposeChanged(int purpose)
+CSVFormatDialog::columnPurposeChanged(int p)
 {
     QObject *o = sender();
+
     QComboBox *cb = qobject_cast<QComboBox *>(o);
     if (!cb) return;
-    int changedCol = -1;
+
+    CSVFormat::ColumnPurpose purpose = (CSVFormat::ColumnPurpose)p;
+
+    bool haveStartTime = false;
+    bool haveDuration = false;
+    int valueCount = 0;
+
     for (int i = 0; i < m_columnPurposeCombos.size(); ++i) {
-        if (cb == m_columnPurposeCombos[i]) {
-            changedCol = i;
-            break;
+
+        CSVFormat::ColumnPurpose cp = m_format.getColumnPurpose(i);
+
+        bool thisChanged = (cb == m_columnPurposeCombos[i]);
+        
+        if (thisChanged) {
+
+            cp = purpose;
+
+        } else {
+
+            // We can only have one ColumnStartTime column, and only
+            // one of either ColumnDuration or ColumnEndTime
+
+            if (purpose == CSVFormat::ColumnStartTime) {
+                if (cp == purpose) {
+                    cp = CSVFormat::ColumnValue;
+                }
+            } else if (purpose == CSVFormat::ColumnDuration ||
+                       purpose == CSVFormat::ColumnEndTime) {
+                if (cp == CSVFormat::ColumnDuration ||
+                    cp == CSVFormat::ColumnEndTime) {
+                    cp = CSVFormat::ColumnValue;
+                }
+            }
+
+            // And we can only have one label
+            if (purpose == CSVFormat::ColumnLabel) {
+                if (cp == purpose) {
+                    cp = CSVFormat::ColumnUnknown;
+                }
+            }
+        }
+
+        if (cp == CSVFormat::ColumnStartTime) {
+            haveStartTime = true;
+        }
+        if (cp == CSVFormat::ColumnEndTime ||
+            cp == CSVFormat::ColumnDuration) {
+            haveDuration = true;
+        }
+        if (cp == CSVFormat::ColumnValue) {
+            ++valueCount;
+        }
+
+        m_columnPurposeCombos[i]->setCurrentIndex(int(cp));
+        m_format.setColumnPurpose(i, cp);
+    }
+
+    if (!haveStartTime) {
+        m_timingTypeCombo->setCurrentIndex(2);
+        timingTypeChanged(2);
+    }
+
+    if (haveStartTime && haveDuration) {
+        m_format.setModelType(CSVFormat::TwoDimensionalModelWithDuration);
+    } else {
+        if (valueCount > 1) {
+            m_format.setModelType(CSVFormat::ThreeDimensionalModel);
+        } else if (valueCount > 0) {
+            m_format.setModelType(CSVFormat::TwoDimensionalModel);
+        } else {
+            m_format.setModelType(CSVFormat::OneDimensionalModel);
         }
     }
-    if (changedCol < 0) {
-        std::cerr << "Hm, some problem here -- column combo changed, but cannot locate column" << std::endl;
-        return;
-    }
-    
+
+    updateModelLabel();
 }