more tab work

- only one tab for any channel can be open
- rudimentary unread indicators
- add some css

res/css/application-low-priority.css

@@ -3,6 +3,31 @@ application wide stuff
 has to be separate to allow main.css to override certain things
 */
 
+.app-window tabbar .box {
+    margin: -7px -1px -7px -1px;
+    background: #2a2a2a;
+    border: 1px solid black;
+}
+
+.app-window tabbar tab:hover {
+    box-shadow: inset 0 -7px lighter(blue);
+}
+
+.app-window tabbar tab:checked {
+    box-shadow: inset 0 -7px blue;
+}
+
+.app-window tabbar tab {
+    background: #1A1A1A;
+    border: 1px solid #808080;
+}
+
+.app-window tabbar tab.needs-attention {
+  font-weight: bold;
+  animation: 150ms ease-in;
+  background-image: radial-gradient(ellipse at bottom, #FF5370, #1A1A1A 30%);
+}
+
 .app-window label:not(:disabled) {
     color: @text_color;
 }

src/components/channeltabswitcherhandy.cpp

@@ -10,6 +10,12 @@ void selected_page_notify_cb(HdyTabView *view, GParamSpec *pspec, ChannelTabSwit
     }
 }
 
+gboolean close_page_cb(HdyTabView *view, HdyTabPage *page, ChannelTabSwitcherHandy *switcher) {
+    switcher->ClearPage(page);
+    hdy_tab_view_close_page_finish(view, page, true);
+    return GDK_EVENT_STOP;
+}
+
 ChannelTabSwitcherHandy::ChannelTabSwitcherHandy() {
     m_tab_bar = hdy_tab_bar_new();
     m_tab_bar_wrapped = Glib::wrap(GTK_WIDGET(m_tab_bar));
@@ -17,13 +23,25 @@ ChannelTabSwitcherHandy::ChannelTabSwitcherHandy() {
     m_tab_view_wrapped = Glib::wrap(GTK_WIDGET(m_tab_view));
 
     g_signal_connect(m_tab_view, "notify::selected-page", G_CALLBACK(selected_page_notify_cb), this);
+    g_signal_connect(m_tab_view, "close-page", G_CALLBACK(close_page_cb), this);
 
     hdy_tab_bar_set_view(m_tab_bar, m_tab_view);
     add(*m_tab_bar_wrapped);
     m_tab_bar_wrapped->show();
+
+    auto &discord = Abaddon::Get().GetDiscordClient();
+    discord.signal_message_create().connect([this](const Message &data) {
+        CheckUnread(data.ChannelID);
+    });
+
+    discord.signal_message_ack().connect([this](const MessageAckData &data) {
+        CheckUnread(data.ChannelID);
+    });
 }
 
 void ChannelTabSwitcherHandy::AddChannelTab(Snowflake id) {
+    if (m_pages.find(id) != m_pages.end()) return;
+
     auto &discord = Abaddon::Get().GetDiscordClient();
     const auto channel = discord.GetChannel(id);
     if (!channel.has_value()) return;
@@ -35,22 +53,44 @@ void ChannelTabSwitcherHandy::AddChannelTab(Snowflake id) {
 
     m_pages[id] = page;
     m_pages_rev[page] = id;
+
+    CheckUnread(id);
 }
 
 void ChannelTabSwitcherHandy::ReplaceActiveTab(Snowflake id) {
     auto *page = hdy_tab_view_get_selected_page(m_tab_view);
     if (page == nullptr) {
         AddChannelTab(id);
+    } else if (auto it = m_pages.find(id); it != m_pages.end()) {
+        hdy_tab_view_set_selected_page(m_tab_view, it->second);
     } else {
         auto &discord = Abaddon::Get().GetDiscordClient();
         const auto channel = discord.GetChannel(id);
         if (!channel.has_value()) return;
 
         hdy_tab_page_set_title(page, ("#" + *channel->Name).c_str());
+
+        ClearPage(page);
+        m_pages[id] = page;
         m_pages_rev[page] = id;
+
+        CheckUnread(id);
     }
 }
 
+void ChannelTabSwitcherHandy::CheckUnread(Snowflake id) {
+    if (auto it = m_pages.find(id); it != m_pages.end()) {
+        hdy_tab_page_set_needs_attention(it->second, Abaddon::Get().GetDiscordClient().GetUnreadStateForChannel(id) > -1);
+    }
+}
+
+void ChannelTabSwitcherHandy::ClearPage(HdyTabPage *page) {
+    if (auto it = m_pages_rev.find(page); it != m_pages_rev.end()) {
+        m_pages.erase(it->second);
+    }
+    m_pages_rev.erase(page);
+}
+
 ChannelTabSwitcherHandy::type_signal_channel_switched_to ChannelTabSwitcherHandy::signal_channel_switched_to() {
     return m_signal_channel_switched_to;
 }

src/components/channeltabswitcherhandy.hpp

@@ -12,10 +12,15 @@ class ChannelTabSwitcherHandy : public Gtk::Box {
 public:
     ChannelTabSwitcherHandy();
 
+    // no-op if already added
     void AddChannelTab(Snowflake id);
+    // switches to existing tab if it exists
     void ReplaceActiveTab(Snowflake id);
 
 private:
+    void CheckUnread(Snowflake id);
+    void ClearPage(HdyTabPage *page);
+
     HdyTabBar *m_tab_bar;
     Gtk::Widget *m_tab_bar_wrapped;
     HdyTabView *m_tab_view;
@@ -25,6 +30,7 @@ private:
     std::unordered_map<HdyTabPage *, Snowflake> m_pages_rev;
 
     friend void selected_page_notify_cb(HdyTabView *, GParamSpec *, ChannelTabSwitcherHandy *);
+    friend gboolean close_page_cb(HdyTabView *, HdyTabPage *, ChannelTabSwitcherHandy *);
 
 public:
     using type_signal_channel_switched_to = sigc::signal<void, Snowflake>;