[polari/wip/raresv/nick-popover: 3/6] chatView: Split out _onNickTagClicked() and bind it to the nickTag

[Florian Müllner <fmuellner src gnome org>]

commit f40179cd281126d5b25edb39cd95862e38a27172
Author: raresv <rares visalom gmail com>
Date:   Sat Aug 20 19:48:23 2016 +0300

    chatView: Split out _onNickTagClicked() and bind it to the nickTag
    
    We used to use the TextTag class for the nickTag, but now we replace
    that with the ButtonTag class, since we will be able to click the nickTag.
    The _onNickTagClicked() method is responsible for creating the popover
    at the right position upon clicking a nickTag. The popover is created
    only once for each nickTag, but it is created on demand, i.e. when
    the _onNickTagClicked() is run for the first time.

 src/chatView.js |   49 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 47 insertions(+), 2 deletions(-)
---
diff --git a/src/chatView.js b/src/chatView.js
index 5e40f9c..32aaded 100644
--- a/src/chatView.js
+++ b/src/chatView.js
@@ -15,6 +15,7 @@ const PasteManager = imports.pasteManager;
 const Signals = imports.signals;
 const Utils = imports.utils;
 const UserTracker = imports.userTracker;
+const UserList = imports.userList;
 
 const MAX_NICK_CHARS = 8;
 const IGNORE_STATUS_TIME = 5;
@@ -1236,14 +1237,20 @@ const ChatView = new Lang.Class({
                 let buffer = this._view.get_buffer();
 
                 if (!nickTag) {
-                    nickTag = new Gtk.TextTag({ name: nickTagName });
+                    nickTag = new ButtonTag({ name: nickTagName });
+                    nickTag.connect('clicked', Lang.bind(this, this._onNickTagClicked));
 
                     this._updateNickTag(nickTag, this._userTracker.getNickStatus(message.nick));
-
                     buffer.get_tag_table().add(nickTag);
                 }
                 tags.push(nickTag);
 
+                let hoverTag = new HoverFilterTag({ filtered_tag: nickTag,
+                                                    hover_opacity: 0.8 });
+                buffer.get_tag_table().add(hoverTag);
+
+                tags.push(hoverTag);
+
                 if (needsGap)
                     tags.push(this._lookupTag('gap'));
                 this._insertWithTags(iter, message.nick, tags);
@@ -1296,6 +1303,44 @@ const ChatView = new Lang.Class({
             tag.foreground_rgba = this._inactiveNickColor;
     },
 
+    _onNickTagClicked: function(tag) {
+        let view = this._view;
+        let event = Gtk.get_current_event();
+        let [, eventX, eventY] = event.get_coords();
+        let [x, y] = view.window_to_buffer_coords(Gtk.TextWindowType.WIDGET,
+                                                          eventX, eventY);
+        let [inside, start] = view.get_iter_at_location(x, y);
+        let end = start.copy();
+
+        if (!start.starts_tag(tag))
+            start.backward_to_tag_toggle(tag);
+
+        if (!end.ends_tag(tag))
+            end.forward_to_tag_toggle(tag);
+
+        let rect1 = view.get_iter_location(start);
+        let rect2 = view.get_iter_location(end);
+
+        [rect1.y, rect1.height] = view.get_line_yrange(start);
+
+        [rect1.x, rect1.y] = view.buffer_to_window_coords(Gtk.TextWindowType.WIDGET, rect1.x, rect1.y);
+        [rect2.x, rect2.y] = view.buffer_to_window_coords(Gtk.TextWindowType.WIDGET, rect2.x, rect2.y);
+        rect1.width = rect2.x - rect1.x;
+
+        //TODO: special chars?
+        let actualNickName = view.get_buffer().get_slice(start, end, false);
+
+        if (!tag._popover)
+            tag._popover = new UserList.UserPopover({ relative_to: this._view,
+                                                      userTracker: this._userTracker,
+                                                      room: this._room });
+
+        tag._popover.nickname = actualNickName;
+
+        tag._popover.pointing_to = rect1;
+        tag._popover.show();
+    },
+
     _createUrlTag: function(url) {
         if (url.indexOf(':') == -1)
             url = 'http://' + url;