[geary/wip/765516-gtk-widget-conversation-viewer: 63/107] Reenable and update code for inline message quote toggling.

[Michael Gratton <mjog src gnome org>]

commit 321e75ef3c9f81c2cad9860ee02ae10beb6efa61
Author: Michael James Gratton <mike vee net>
Date:   Tue Apr 12 21:54:51 2016 +1000

    Reenable and update code for inline message quote toggling.
    
    * src/client/conversation-viewer/conversation-message.vala: Reenable,
      update and hook up calls to unset_controllable_quotes,
      on_show_quote_clicked and on_hide_quote_clicked. Remove the show/hide
      dichotomy, just use hide when the quote should be hidden.
    
    * theming/message-viewer.css: Updated to chase style changes.

 .../conversation-viewer/conversation-message.vala  |  101 ++++++++++++--------
 theming/message-viewer.css                         |   38 ++++----
 2 files changed, 79 insertions(+), 60 deletions(-)
---
diff --git a/src/client/conversation-viewer/conversation-message.vala 
b/src/client/conversation-viewer/conversation-message.vala
index 69bb3b0..31cefc3 100644
--- a/src/client/conversation-viewer/conversation-message.vala
+++ b/src/client/conversation-viewer/conversation-message.vala
@@ -414,8 +414,24 @@ public class ConversationMessage : Gtk.Box {
 
         web_view.notify["load-status"].connect((source, param) => {
                 if (web_view.load_status == WebKit.LoadStatus.FINISHED) {
+                    WebKit.DOM.HTMLElement html = (
+                        web_view.get_dom_document().document_element as
+                        WebKit.DOM.HTMLElement
+                    );
+                    if (html != null) {
+                        try {
+                            unset_controllable_quotes(html);
+                        } catch (Error error) {
+                            warning("Error unsetting controllable_quotes: %s",
+                                    error.message);
+                        }
+                    }
                     bind_event(web_view, "body a", "click",
                                (Callback) on_link_clicked, this);
+                    bind_event(web_view, ".quote_container > .shower", "click",
+                               (Callback) on_show_quote_clicked, this);
+                    bind_event(web_view, ".quote_container > .hider", "click",
+                               (Callback) on_hide_quote_clicked, this);
                 }
             });
         web_view.load_string(body_text, "text/html", "UTF8", "");
@@ -604,24 +620,6 @@ public class ConversationMessage : Gtk.Box {
     //     return menu;
     // }
 
-    // private static void on_hide_quote_clicked(WebKit.DOM.Element element) {
-    //     try {
-    //         WebKit.DOM.Element parent = element.get_parent_element();
-    //         parent.set_attribute("class", "quote_container controllable hide");
-    //     } catch (Error error) {
-    //         warning("Error hiding quote: %s", error.message);
-    //     }
-    // }
-
-    // private static void on_show_quote_clicked(WebKit.DOM.Element element) {
-    //     try {
-    //         WebKit.DOM.Element parent = element.get_parent_element();
-    //         parent.set_attribute("class", "quote_container controllable show");
-    //     } catch (Error error) {
-    //         warning("Error hiding quote: %s", error.message);
-    //     }
-    // }
-
     // private void on_unstar_clicked() {
     //  unflag_message();
     // }
@@ -851,28 +849,6 @@ public class ConversationMessage : Gtk.Box {
     //     return menu;
     // }
 
-    private WebKit.DOM.HTMLDivElement create_quote_container() throws Error {
-        WebKit.DOM.HTMLDivElement quote_container = web_view.create_div();
-        quote_container.set_attribute("class", "quote_container controllable hide");
-        quote_container.set_inner_html(
-            """<div class="shower"><input type="button" value="▼        ▼        ▼" /></div>""" +
-            """<div class="hider"><input type="button" value="▲        ▲        ▲" /></div>""" +
-            """<div class="quote"></div>""");
-        return quote_container;
-    }
-
-    // private void unset_controllable_quotes(WebKit.DOM.HTMLElement element) throws GLib.Error {
-    //     WebKit.DOM.NodeList quote_list = element.query_selector_all(".quote_container.controllable");
-    //     for (int i = 0; i < quote_list.length; ++i) {
-    //         WebKit.DOM.Element quote_container = quote_list.item(i) as WebKit.DOM.Element;
-    //         long scroll_height = quote_container.query_selector(".quote").scroll_height;
-    //         // If the message is hidden, scroll_height will be 0.
-    //         if (scroll_height > 0 && scroll_height < QUOTE_SIZE_THRESHOLD) {
-    //             quote_container.set_attribute("class", "quote_container");
-    //         }
-    //     }
-    // }
-    
     private string clean_html_markup(string text, Geary.RFC822.Message message, out bool remote_images) {
         remote_images = false;
         try {
@@ -995,6 +971,18 @@ public class ConversationMessage : Gtk.Box {
         }
     }
     
+    private WebKit.DOM.HTMLDivElement create_quote_container() throws Error {
+        WebKit.DOM.HTMLDivElement quote_container = web_view.create_div();
+        quote_container.set_attribute(
+            "class", "quote_container controllable hide"
+        );
+        quote_container.set_inner_html("""
+<div class="shower"><input type="button" value="▼        ▼        ▼" /></div>
+<div class="hider"><input type="button" value="▲        ▲        ▲" /></div>
+<div class="quote"></div>""");
+        return quote_container;
+    }
+
     private void wrap_html_signature(ref WebKit.DOM.HTMLElement container) throws Error {
         // Most HTML signatures fall into one of these designs which are handled by this method:
         //
@@ -1034,6 +1022,19 @@ public class ConversationMessage : Gtk.Box {
         parent.append_child(signature_container);
     }
     
+    private void unset_controllable_quotes(WebKit.DOM.HTMLElement element) throws GLib.Error {
+        WebKit.DOM.NodeList quote_list = element.query_selector_all(".quote_container.controllable");
+        for (int i = 0; i < quote_list.length; ++i) {
+            WebKit.DOM.Element quote_container = quote_list.item(i) as WebKit.DOM.Element;
+            long scroll_height = quote_container.query_selector(".quote").scroll_height;
+            // If the message is hidden, scroll_height will be 0.
+            if (scroll_height > 0 && scroll_height < QUOTE_SIZE_THRESHOLD) {
+                quote_container.class_list.remove("controllable");
+                quote_container.class_list.remove("hide");
+            }
+        }
+    }
+    
     // private bool should_show_attachment(Geary.Attachment attachment) {
     //     // if displayed inline, don't include in attachment list
     //     if (attachment.content_id in inlined_content_ids)
@@ -1214,6 +1215,26 @@ public class ConversationMessage : Gtk.Box {
         }
     }
 
+    private static void on_show_quote_clicked(WebKit.DOM.Element element,
+                                              WebKit.DOM.Event event) {
+        try {
+            ((WebKit.DOM.HTMLElement) element.parent_node).class_list.remove("hide");
+        } catch (Error error) {
+            warning("Error showing quote: %s", error.message);
+        }
+    }
+
+    private static void on_hide_quote_clicked(WebKit.DOM.Element element,
+                                              WebKit.DOM.Event event,
+                                              ConversationMessage message) {
+        try {
+            ((WebKit.DOM.HTMLElement) element.parent_node).class_list.add("hide");
+            message.web_view.queue_resize();
+        } catch (Error error) {
+            warning("Error toggling quote: %s", error.message);
+        }
+    }
+
     private static void on_link_clicked(WebKit.DOM.Element element,
                                         WebKit.DOM.Event event,
                                         ConversationMessage message) {
diff --git a/theming/message-viewer.css b/theming/message-viewer.css
index c0aebb0..cfabae6 100644
--- a/theming/message-viewer.css
+++ b/theming/message-viewer.css
@@ -100,10 +100,6 @@ blockquote {
     -webkit-user-select: auto;
     -webkit-user-drag: auto;
   }
-  .shower, .hider {
-    -webkit-user-select: none;
-    -webkit-user-drag: none;
-  }
 
   .replaced_inline_image {
     display: block;
@@ -136,6 +132,8 @@ blockquote {
     margin-right: -0.67em;
   }
 
+  /* Inline collapsable quote blocks */
+
   .quote_container {
     position: relative;
     margin: 5px 0;
@@ -144,27 +142,25 @@ blockquote {
     background-color: #e8e8e8;/* recv-quoted */
     border-radius: 4px;
   }
+  .sent .quote_container {
+    background-color: #e8e8e8;/* sent-quoted */
+  }
   .quote_container .quote {
     overflow: hidden;
     position: relative;
     z-index: 0;
   }
-  .quote_container.controllable .quote {
+  .quote_container.controllable.hide .quote {
     max-height: 6em;
   }
-  .quote_container.controllable.show .quote {
-    max-height: none;
-  }
-
-  .sent .quote_container {
-    background-color: #e8e8e8;/* sent-quoted */
-  }
 
   .quote_container > .shower,
   .quote_container > .hider {
+    -webkit-user-select: none;
+    -webkit-user-drag: none;
     position: absolute;
     z-index: 1;
-    bottom: -7px;
+    bottom: -8px;
     left: 0;
     right: 0;
     display: none;
@@ -185,21 +181,23 @@ blockquote {
 
   .quote_container.controllable {
     margin-bottom: 7px;
-    padding-bottom: 0;
-  }
-  .quote_container.controllable.show {
     padding-bottom: 12px;
   }
-  .quote_container.controllable > .shower {
-    display: block;
+  .quote_container.controllable.hide {
+    padding-bottom: 0;
   }
-  .quote_container.controllable.show > .shower {
+
+  .quote_container.controllable > .shower,
+  .quote_container.controllable.hide > .hider {
     display: none;
   }
-  .quote_container.controllable.show > .hider {
+  .quote_container.controllable.hide > .shower,
+  .quote_container.controllable > .hider {
     display: block;
   }
 
+  /* Highlight search terms */
+
   .search_coloring *::selection {
     background-color: #00ddff;
   }