[geary/wip/728002-webkit2] Replace two composer IPC calls for indenting with a single one.

[Michael Gratton <mjog src gnome org>]

commit ba2a49b41f10eccab9b22f183dd91f73c13b2503
Author: Michael James Gratton <mike vee net>
Date:   Thu Jan 26 14:06:36 2017 +1100

    Replace two composer IPC calls for indenting with a single one.
    
    * src/client/composer/composer-web-view.vala (ClientWebView): Replace
      ::undo_blockquote_style with ::indent_line.
    
    * src/client/composer/composer-widget.vala (ComposerWidget::on_indent):
      Call new ::indent_line method, rather than doing a execCommand and a
      second JS thunking call to fix the markup.
    
    * ui/composer-web-view.js: Also replace ::undoBlockquoteStyle with new
      ::indentLine method. Add unit test.

 src/client/composer/composer-web-view.vala |   14 +++++++-------
 src/client/composer/composer-widget.vala   |    3 +--
 test/js/composer-page-state-test.vala      |   18 ++++++++++++++++++
 ui/composer-web-view.js                    |   21 +++++++++++----------
 4 files changed, 37 insertions(+), 19 deletions(-)
---
diff --git a/src/client/composer/composer-web-view.vala b/src/client/composer/composer-web-view.vala
index 20593a9..5356696 100644
--- a/src/client/composer/composer-web-view.vala
+++ b/src/client/composer/composer-web-view.vala
@@ -370,6 +370,13 @@ public class ComposerWebView : ClientWebView {
     }
 
     /**
+     * Indents the line at the current text cursor location.
+     */
+    public void indent_line() {
+        this.run_javascript.begin("geary.indentLine();", null);
+    }
+
+    /**
      * Updates the signature block if it has not been deleted.
      */
     public new void update_signature(string signature) {
@@ -487,13 +494,6 @@ public class ComposerWebView : ClientWebView {
     /**
      * ???
      */
-    public void undo_blockquote_style() {
-        this.run_javascript.begin("geary.undoBlockquoteStyle();", null);
-    }
-
-    /**
-     * ???
-     */
     public void linkify_document() {
         // XXX
     }
diff --git a/src/client/composer/composer-widget.vala b/src/client/composer/composer-widget.vala
index 7a44bcd..cb9fc2e 100644
--- a/src/client/composer/composer-widget.vala
+++ b/src/client/composer/composer-widget.vala
@@ -1781,8 +1781,7 @@ public class ComposerWidget : Gtk.EventBox {
     }
 
     private void on_indent(SimpleAction action, Variant? param) {
-        on_action(action, param);
-        this.editor.undo_blockquote_style();
+        this.editor.indent_line();
     }
 
     private void on_mouse_target_changed(WebKit.WebView web_view,
diff --git a/test/js/composer-page-state-test.vala b/test/js/composer-page-state-test.vala
index 931933a..f792984 100644
--- a/test/js/composer-page-state-test.vala
+++ b/test/js/composer-page-state-test.vala
@@ -11,6 +11,7 @@ class ComposerPageStateTest : ClientWebViewTestCase<ComposerWebView> {
         base("ComposerPageStateTest");
         add_test("edit_context_font", edit_context_font);
         add_test("edit_context_link", edit_context_link);
+        add_test("indent_line", indent_line);
         add_test("contains_attachment_keywords", contains_attachment_keywords);
         add_test("get_html", get_html);
         add_test("get_text", get_text);
@@ -54,6 +55,23 @@ class ComposerPageStateTest : ClientWebViewTestCase<ComposerWebView> {
         }
     }
 
+    public void indent_line() {
+        load_body_fixture("""<span id="test">some text</span>""");
+        try {
+            run_javascript(@"SelectionUtil.selectNode(document.getElementById('test'))");
+            run_javascript(@"geary.indentLine()");
+            
assert(WebKitUtil.to_number(run_javascript(@"document.querySelectorAll('blockquote[type=cite]').length")) == 
1);
+            
assert(WebKitUtil.to_string(run_javascript(@"document.querySelectorAll('blockquote[type=cite]').item(0).innerText"))
 ==
+                "some text");
+        } catch (Geary.JS.Error err) {
+            print("Geary.JS.Error: %s\n", err.message);
+            assert_not_reached();
+        } catch (Error err) {
+            print("WKError: %s\n", err.message);
+            assert_not_reached();
+        }
+    }
+
     public void contains_attachment_keywords() {
         load_body_fixture("""
 <blockquote>inner quote</blockquote>
diff --git a/ui/composer-web-view.js b/ui/composer-web-view.js
index a1adeae..8207f2e 100644
--- a/ui/composer-web-view.js
+++ b/ui/composer-web-view.js
@@ -157,6 +157,17 @@ ComposerPageState.prototype = {
             }
         }
     },
+    indentLine: function() {
+        document.execCommand("indent", false, null);
+        let nodeList = document.querySelectorAll(
+            "blockquote[style=\"margin: 0 0 0 40px; border: none; padding: 0px;\"]"
+        );
+        for (let i = 0; i < nodeList.length; ++i) {
+            let element = nodeList.item(i);
+            element.removeAttribute("style");
+            element.setAttribute("type", "cite");
+        }
+    },
     updateSignature: function(signature) {
         // XXX need mark the sig somehow so we can find it, select
         // it and replace it using execCommand
@@ -278,16 +289,6 @@ ComposerPageState.prototype = {
             );
         }
     },
-    undoBlockquoteStyle: function() {
-        let nodeList = document.querySelectorAll(
-            "blockquote[style=\"margin: 0 0 0 40px; border: none; padding: 0px;\"]"
-        );
-        for (let i = 0; i < nodeList.length; ++i) {
-            let element = nodeList.item(i);
-            element.removeAttribute("style");
-            element.setAttribute("type", "cite");
-        }
-    },
     documentModified: function(element) {
         window.webkit.messageHandlers.documentModified.postMessage(null);
     },