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statistics: reverse chart selection logic

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The old ways was to select the chart first, then depending on
the chart choose the binning.

Willem says that it should work the other way round: select
the binning (or operation) and make the charts depend on
that.

I'm not arguing one way or the other, just note that the new
way is much more tricky, because it is easy to get unsupported
combinations. For example, there is no chart where the
first variable is unbinned, but the second axis is binned
or has an operation. This makes things distinctly more tricky
and this code still needs a thorough audit.

Since this is all more tricky, implement a "invalid" chart
state. Ideally that should be never shown to the user, but
let's try to be defensive.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-01-03 00:31:55 +01:00 • committed by Dirk Hohndel
parent 106f7a8e0e
commit 7b0455b4d8
4 changed files with 185 additions and 108 deletions
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34
desktop-widgets/statswidget.cpp
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@ -89,45 +89,23 @@ StatsWidget::StatsWidget(QWidget *parent) : QWidget(parent)
static void setVariableList(QComboBox *combo, const StatsState::VariableList &list)
{
combo->clear();
combo->setEnabled(!list.variables.empty());
for (const StatsState::Variable &v: list.variables)
combo->addItem(v.name, QVariant(v.id));
combo->setCurrentIndex(list.selected);
}
// Initialize QComboBox and QLabel of binners. Hide if there are no binners.
static void setBinList(QLabel *label, QComboBox *combo, const QString &varName, const StatsState::BinnerList &list)
static void setBinList(QLabel *label, QComboBox *combo, const StatsState::BinnerList &list)
{
combo->clear();
if (list.binners.empty()) {
label->hide();
combo->hide();
return;
}
label->show();
combo->show();
combo->setEnabled(!list.binners.empty());
for (const QString &s: list.binners)
combo->addItem(s);
combo->setCurrentIndex(list.selected);
}
// Initialize QComboBox and QLabel of operations. Hide if there are no operations.
static void setOperationList(QLabel *label, QComboBox *combo, const QString &varName, const StatsState::VariableList &list)
{
combo->clear();
if (list.variables.empty()) {
label->hide();
combo->hide();
return;
}
label->show();
combo->show();
setVariableList(combo, list);
}
void StatsWidget::updateUi()
{
StatsState::UIState uiState = state.getUIState();
@ -136,9 +114,9 @@ void StatsWidget::updateUi()
int pos = charts.update(uiState.charts);
ui.chartType->setCurrentIndex(pos);
ui.chartType->setItemDelegate(new ChartItemDelegate);
setBinList(ui.var1BinnerLabel, ui.var1Binner, uiState.var1Name, uiState.binners1);
setBinList(ui.var2BinnerLabel, ui.var2Binner, uiState.var2Name, uiState.binners2);
setOperationList(ui.var2OperationLabel, ui.var2Operation, uiState.var2Name, uiState.operations2);
setBinList(ui.var1BinnerLabel, ui.var1Binner, uiState.binners1);
setBinList(ui.var2BinnerLabel, ui.var2Binner, uiState.binners2);
setVariableList(ui.var2Operation, uiState.operations2);
// Add checkboxes for additional features
features.clear();