forked from mia/Aegisub
120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
// Copyright (c) 2012, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include "utils.h"
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#include <libaegisub/exception.h>
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#include <vector>
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#include <typeinfo>
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#include <wx/dialog.h>
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namespace agi { struct Context; }
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/// @brief A manager for dialogs
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///
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/// DialogManager keeps track of modal and modeless dialogs which have been
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/// created, so that commands can be send to the appropriate places and so that
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/// the same dialog can't be opened twice at once.
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class DialogManager {
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using dialog_pair = std::pair<const std::type_info *, wxDialog *>;
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/// Dialogs which currently exist
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std::vector<dialog_pair> created_dialogs;
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/// Close handler which deletes and unregisters closed modeless dialogs
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template<typename Event>
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void OnClose(Event &evt) {
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evt.Skip();
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Destroy(static_cast<wxWindow *>(evt.GetEventObject()));
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}
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void Destroy(wxWindow *dialog) {
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while (!dialog->IsTopLevel()) dialog = dialog->GetParent();
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dialog->Destroy();
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for (auto it = created_dialogs.begin(); it != created_dialogs.end(); ++it) {
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if (it->second == dialog) {
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created_dialogs.erase(it);
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return;
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}
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}
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}
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std::vector<dialog_pair>::iterator Find(std::type_info const& type) {
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for (auto it = begin(created_dialogs); it != end(created_dialogs); ++it) {
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if (*it->first == type)
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return it;
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}
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return end(created_dialogs);
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}
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public:
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/// Show a modeless dialog of the given type, creating it if needed
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/// @tparam DialogType Type of dialog to show
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template<class DialogType>
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void Show(agi::Context *c) {
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for (auto const& diag : created_dialogs) {
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if (*diag.first == typeid(DialogType)) {
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diag.second->Show();
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diag.second->SetFocus();
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}
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}
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try {
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wxDialog *d = new DialogType(c);
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created_dialogs.emplace_back(&typeid(DialogType), d);
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d->Bind(wxEVT_CLOSE_WINDOW, &DialogManager::OnClose<wxCloseEvent>, this);
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d->Bind(wxEVT_BUTTON, &DialogManager::OnClose<wxCommandEvent>, this, wxID_CANCEL);
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d->Show();
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SetFloatOnParent(d);
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}
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catch (agi::UserCancelException const&) { }
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}
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/// Show a modal dialog of the given type, creating it if needed
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/// @tparam DialogType Type of dialog to show
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template<class DialogType>
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void ShowModal(agi::Context *c) {
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DialogType diag(c);
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created_dialogs.emplace_back(&typeid(DialogType), &diag);
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try {
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diag.ShowModal();
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}
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catch (...) {
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created_dialogs.erase(Find(typeid(DialogType)));
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throw;
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}
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created_dialogs.erase(Find(typeid(DialogType)));
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}
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/// Get the dialog of the given type
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/// @tparam DialogType Type of dialog to get
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/// @return A pointer to a DialogType or nullptr if no dialog of the given type has been created
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template<class DialogType>
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DialogType *Get() const {
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auto it = const_cast<DialogManager *>(this)->Find(typeid(DialogType));
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return it != created_dialogs.end() ? static_cast<DialogType*>(it->second) : nullptr;
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}
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~DialogManager() {
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for (auto const& it : created_dialogs) {
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it.second->Unbind(wxEVT_CLOSE_WINDOW, &DialogManager::OnClose<wxCloseEvent>, this);
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it.second->Unbind(wxEVT_BUTTON, &DialogManager::OnClose<wxCommandEvent>, this, wxID_CANCEL);
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it.second->Destroy();
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}
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}
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};
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