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6f574c53a3
This one is a bit more tricky. There are two modes: set dive site and set newly created dive site. This is realized using an OO model with derived classed. Quite convoluted - but it seems to work. Moreover, editing a dive site is not simply setting a value, but the list of dives in a dive site has to be kept up to date. Finally, we have to inform the dive site list of the changed number of dives. Therefore add a new signal diveSiteDivesChanged. To send only one signal per dive site, hook into the undo() and redo() functions and call the functions of the base class there. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
141 lines
4.7 KiB
C++
141 lines
4.7 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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// Note: this header file is used by the undo-machinery and should not be included elsewhere.
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#ifndef COMMAND_EDIT_H
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#define COMMAND_EDIT_H
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#include "command_base.h"
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#include "core/subsurface-qt/DiveListNotifier.h"
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#include <QVector>
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// These are commands that edit individual fields of a set of dives.
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// The implementation is very OO-style. Out-of-fashion and certainly
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// not elegant, but in line with Qt's OO-based design.
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// The actual code is in a common base class "Command::EditBase". To
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// read and set the fields, the base class calls virtual functions of
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// the derived classes.
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//
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// To deal with different data types, the base class is implemented
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// as a template. The template parameter is the type to be read or
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// set. Thus, switch-cascades and union trickery can be avoided.
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// We put everything in a namespace, so that we can shorten names without polluting the global namespace
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namespace Command {
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template <typename T>
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class EditBase : public Base {
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protected:
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T value; // Value to be set
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T old; // Previous value
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void undo() override;
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void redo() override;
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bool workToBeDone() override;
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// Dives to be edited. For historical reasons, the *last* entry was
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// the active dive when the user initialized the action. This dive
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// will be made the current dive on redo / undo.
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std::vector<dive *> dives;
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public:
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EditBase(const QVector<dive *> &dives, T newValue, T oldValue);
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protected:
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// Get and set functions to be overriden by sub-classes.
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virtual void set(struct dive *d, T) const = 0;
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virtual T data(struct dive *d) const = 0;
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virtual QString fieldName() const = 0; // Name of the field, used to create the undo menu-entry
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virtual DiveField fieldId() const = 0;
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};
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class EditNotes : public EditBase<QString> {
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public:
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using EditBase<QString>::EditBase; // Use constructor of base class.
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void set(struct dive *d, QString s) const override;
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QString data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditSuit : public EditBase<QString> {
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public:
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using EditBase<QString>::EditBase; // Use constructor of base class.
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void set(struct dive *d, QString s) const override;
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QString data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditRating : public EditBase<int> {
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public:
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using EditBase<int>::EditBase; // Use constructor of base class.
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void set(struct dive *d, int value) const override;
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int data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditVisibility : public EditBase<int> {
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public:
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using EditBase<int>::EditBase; // Use constructor of base class.
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void set(struct dive *d, int value) const override;
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int data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditAirTemp : public EditBase<int> {
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public:
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using EditBase<int>::EditBase; // Use constructor of base class.
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void set(struct dive *d, int value) const override;
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int data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditWaterTemp : public EditBase<int> {
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public:
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using EditBase<int>::EditBase; // Use constructor of base class.
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void set(struct dive *d, int value) const override;
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int data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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class EditDiveSite : public EditBase<struct dive_site *> {
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public:
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using EditBase<struct dive_site *>::EditBase; // Use constructor of base class.
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void set(struct dive *d, struct dive_site *value) const override;
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struct dive_site *data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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// We specialize these so that we can send dive-site changed signals.
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void undo() override;
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void redo() override;
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};
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// Edit dive site, but add a new dive site first. Reuses the code of EditDiveSite by
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// deriving from it and hooks into undo() and redo() to add / remove the dive site.
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class EditDiveSiteNew : public EditDiveSite {
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public:
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OwningDiveSitePtr diveSiteToAdd;
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struct dive_site *diveSiteToRemove;
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EditDiveSiteNew(const QVector<dive *> &dives, const QString &newName, struct dive_site *oldValue);
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void undo() override;
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void redo() override;
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};
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class EditMode : public EditBase<int> {
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int index;
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public:
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EditMode(const QVector<dive *> &dives, int indexIn, int newValue, int oldValue);
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void set(struct dive *d, int i) const override;
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int data(struct dive *d) const override;
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QString fieldName() const override;
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DiveField fieldId() const override;
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};
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} // namespace Command
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#endif
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