subsurface/qt-models/filtermodels.h

// SPDX-License-Identifier: GPL-2.0
#ifndef FILTERMODELS_H
#define FILTERMODELS_H

#include "divetripmodel.h"

#include <QSortFilterProxyModel>

class MultiFilterSortModel : public QSortFilterProxyModel {
	Q_OBJECT
public:
	static MultiFilterSortModel *instance();
	bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
	bool lessThan(const QModelIndex &, const QModelIndex &) const override;

	void resetModel(DiveTripModelBase::Layout layout);
private:
	MultiFilterSortModel(QObject *parent = 0);
};

#endif
Add SPDX header to Qt models Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2017-04-27 20:25:32 +02:00			`// SPDX-License-Identifier: GPL-2.0`
Move the filters code to it's own file. We already have a bunch of filters, let's pack them together Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2014-11-13 16:31:03 -02:00			`#ifndef FILTERMODELS_H`
			`#define FILTERMODELS_H`

Dive list: split DiveTripModel into distinct models (tree and list) The DiveTripModel was used to represent both, trip and list views. Thus many functions had conditionals checking for the current mode and both modes had to be represented by the same data structure. Instead, split the model in two and derive them from a base class, which implements common functions and defines an interface. The model can be switched by a call to resetModel(), which invalidates any pointer obtained by instance(). This is quite surprising behavior. To handle it, straighten out the control flow: DiveListView --> MultiFilterSortModel --> DiveTripModelBase Before, DiveListView accessed DiveTripModelBase directly. A goal of this commit is to enable usage of the same model by mobile and desktop. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2018-12-27 10:06:11 +01:00			`#include "divetripmodel.h"`
Dive list: make filter model aware of its source The data-flow from C-core to list-view is as follows: C-core --> DiveTripModel --> MultiSortFilterModel --> DiveListView The control-flow, on the other hand, differs as DiveListView accesses both MultiSortFilterModel and DiveTripModel, whereas MultiSortFilterModel is mostly unaware of its source model. This is in principle legitimate, as the MultiSortFilterModel might be used for different sources. In our particular case, this is not so. MultiSortFilterModel is written for a particular use case. Therefore, model control-flow follow after data-flow: Let MultiSortFilterModel set its own source model and DiveListView access the MultiSortFilterModel, which then manages its source model. This is not bike-shedding, but will enable a more flexible and higher-performance sorting. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2018-10-29 14:56:48 +01:00
Move the filters code to it's own file. We already have a bunch of filters, let's pack them together Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2014-11-13 16:31:03 -02:00			`#include <QSortFilterProxyModel>`

			`class MultiFilterSortModel : public QSortFilterProxyModel {`
			`Q_OBJECT`
			`public:`
			`static MultiFilterSortModel *instance();`
Cleanup: reinstate override modifiers This reverts commit 1c4a859c8d0b37b2e938209fe9c4d99e9758327a, where the override modifiers were removed owing to the noisy "inconsistent override modifiers" which is default-on in clang. This warning was disabled in 77577f717f5aad38ea8c4c41c10c181486c4337f, so we can reinstate the overrides. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2018-09-29 22:13:44 +02:00			`bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;`
Dive list: implement custom lessThan function The dive list was sorted using the default-sorter of QSortFilterProxy model. This is mighty inflexible as it considers only one column. This has the funky effect that for rows with identical elements, the sort order depends on the previous sorting. Implement a lessThan() function in the MultiFilterSortModel, which simply hands the sorting down to the actual model. This might be considered a layering violation, but it makes things so much easier. Sadly, it seems like the column-to-be-sorted is transported in the provided indices. Therefore, the comparison is chosen using a switch for every comparison. It would seem much more logical to set a function pointer once and use that. Further investigations are necessary. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2018-10-29 20:17:53 +01:00			`bool lessThan(const QModelIndex &, const QModelIndex &) const override;`
Filter: split out filter from model Split out the actual filtering from the MultiFilterSortModel. Create a DiveFilter class that does the actual filtering. Currently, mobile and desktop have their own version of this class, though ultimately we may want to merge them. The idea here is that the trip-model and undo-commands have direct access to the filter-function and thus can take care of keeping track of the number of shown dives, etc. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2019-11-17 18:13:55 +01:00
Dive list: split DiveTripModel into distinct models (tree and list) The DiveTripModel was used to represent both, trip and list views. Thus many functions had conditionals checking for the current mode and both modes had to be represented by the same data structure. Instead, split the model in two and derive them from a base class, which implements common functions and defines an interface. The model can be switched by a call to resetModel(), which invalidates any pointer obtained by instance(). This is quite surprising behavior. To handle it, straighten out the control flow: DiveListView --> MultiFilterSortModel --> DiveTripModelBase Before, DiveListView accessed DiveTripModelBase directly. A goal of this commit is to enable usage of the same model by mobile and desktop. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> 2018-12-27 10:06:11 +01:00			`void resetModel(DiveTripModelBase::Layout layout);`
Move the filters code to it's own file. We already have a bunch of filters, let's pack them together Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2014-11-13 16:31:03 -02:00			`private:`
			`MultiFilterSortModel(QObject *parent = 0);`
			`};`

When closing the filter window also clear the filter The tooltip already pretended that that's what it did... Also make the tooltip wording consistent. Signed-off-by: Dirk Hohndel <dirk@hohndel.org> 2014-11-13 13:45:32 -08:00			`#endif`