--- /dev/null
+/* ncmpc (Ncurses MPD Client)
+ * (c) 2004-2018 The Music Player Daemon Project
+ * Project homepage: http://musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "ProxyPage.hxx"
+
+#include <assert.h>
+
+void
+ProxyPage::SetCurrentPage(struct mpdclient &c, Page *new_page)
+{
+ if (current_page != nullptr && is_open)
+ current_page->OnClose();
+
+ current_page = new_page;
+
+ if (current_page != nullptr && is_open) {
+ current_page->OnOpen(c);
+ current_page->Resize(GetLastSize());
+ current_page->Update(c);
+ current_page->SetDirty(false);
+ }
+
+ SetDirty();
+}
+
+void
+ProxyPage::OnOpen(struct mpdclient &c)
+{
+ assert(!is_open);
+ is_open = true;
+
+ if (current_page != nullptr)
+ current_page->OnOpen(c);
+
+ MoveDirty();
+}
+
+void
+ProxyPage::OnClose()
+{
+ assert(is_open);
+ is_open = false;
+
+ if (current_page != nullptr)
+ current_page->OnClose();
+}
+
+void
+ProxyPage::OnResize(Size size)
+{
+ if (current_page != nullptr)
+ current_page->Resize(size);
+
+ MoveDirty();
+}
+
+void
+ProxyPage::Paint() const
+{
+ if (current_page != nullptr)
+ current_page->Paint();
+ else
+ wclrtobot(w);
+}
+
+void
+ProxyPage::Update(struct mpdclient &c, unsigned events)
+{
+ if (current_page != nullptr) {
+ current_page->AddPendingEvents(events);
+ current_page->Update(c);
+ MoveDirty();
+ }
+}
+
+bool
+ProxyPage::OnCommand(struct mpdclient &c, command_t cmd)
+{
+ if (current_page != nullptr) {
+ bool result = current_page->OnCommand(c, cmd);
+ MoveDirty();
+ return result;
+ } else
+ return false;
+}
+
+#ifdef HAVE_GETMOUSE
+bool
+ProxyPage::OnMouse(struct mpdclient &c, Point p, mmask_t bstate)
+{
+ if (current_page != nullptr) {
+ bool result = current_page->OnMouse(c, p, bstate);
+ MoveDirty();
+ return result;
+ } else
+ return false;
+}
+#endif
+
+const char *
+ProxyPage::GetTitle(char *s, size_t size) const
+{
+ return current_page != nullptr
+ ? current_page->GetTitle(s, size)
+ : "";
+}
--- /dev/null
+/* ncmpc (Ncurses MPD Client)
+ * (c) 2004-2018 The Music Player Daemon Project
+ * Project homepage: http://musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef NCMPC_PROXY_PAGE_HXX
+#define NCMPC_PROXY_PAGE_HXX
+
+#include "Page.hxx"
+
+class ProxyPage : public Page {
+ WINDOW *const w;
+
+ Page *current_page = nullptr;
+
+ bool is_open = false;
+
+public:
+ explicit ProxyPage(WINDOW *_w):w(_w) {}
+
+ const Page *GetCurrentPage() const {
+ return current_page;
+ }
+
+ Page *GetCurrentPage() {
+ return current_page;
+ }
+
+ void SetCurrentPage(struct mpdclient &c, Page *new_page);
+
+private:
+ void MoveDirty() {
+ if (current_page != nullptr && current_page->IsDirty()) {
+ current_page->SetDirty(false);
+ SetDirty();
+ }
+ }
+
+public:
+ /* virtual methods from Page */
+ void OnOpen(struct mpdclient &c) override;
+ void OnClose() override;
+ void OnResize(Size size) override;
+ void Paint() const override;
+ void Update(struct mpdclient &c, unsigned events) override;
+ bool OnCommand(struct mpdclient &c, command_t cmd) override;
+
+#ifdef HAVE_GETMOUSE
+ bool OnMouse(struct mpdclient &c, Point p, mmask_t bstate) override;
+#endif
+
+ const char *GetTitle(char *s, size_t size) const override;
+};
+
+#endif