Optimize and clean-up form history

Switch from g_file_test() to g_access()

Initialize suggestions once the DOM is ready and only once

No need to handle WEBKIT_WEB_NAVIGATION_REASON_FORM_RESUBMITTED

[JS] Hide suggestions if search pattern was cleared

[JS] Human usable up/ down navigation in the suggestion window

Reusing a single suggestion window introduced a regression.
Suggestions were filling into the wrong editbox if there was more
than 1 on the page.

Some comments fixed and style clean-ups

Removed dead code

data/autosuggestcontrol.css

@@ -1,9 +1,6 @@
 div.suggestions {
-    -moz-box-sizing: border-box;
-    box-sizing: border-box;
-    border: 1px solid #cccccc;
+    -webkit-appearance: listbox;
     text-align: left;
-    background-color: #ffffff;
     position: absolute;
     z-index: 999;
 }

data/autosuggestcontrol.js

@@ -38,7 +38,6 @@ function AutoSuggestControl(oTextbox /*:HTMLInputElement*/,
  * @param bTypeAhead If the control should provide a type ahead suggestion.
  */
 AutoSuggestControl.prototype.autosuggest = function (aSuggestions /*:Array*/) {
-    //make sure theres at least one suggestion
     if (aSuggestions.length > 0) {
         this.showSuggestions(aSuggestions);
     } else {
@@ -51,35 +50,16 @@ AutoSuggestControl.prototype.autosuggest = function (aSuggestions /*:Array*/) {
  * @scope private
  */
 AutoSuggestControl.prototype.createDropDown = function () {
-    var oThis = this;
-
     var sDiv = document.getElementById("suggestions_box");
-
-    if (sDiv)
+    if (sDiv) {
         this.layer = sDiv;
-    else
-    {
+        return;
+    }
     this.layer = document.createElement("div");
     this.layer.className = "suggestions";
     this.layer.id = "suggestions_box";
     this.layer.style.visibility = "hidden";
     this.layer.style.width = this.textbox.offsetWidth;
-    }
-    this.layer.onmousedown =
-    this.layer.onmouseup =
-    this.layer.onmouseover = function (oEvent) {
-        oEvent = oEvent || window.event;
-        oTarget = oEvent.target || oEvent.srcElement;
-
-        if (oEvent.type == "mousedown") {
-            oThis.textbox.value = oTarget.firstChild.nodeValue;
-            oThis.hideSuggestions();
-        } else if (oEvent.type == "mouseover") {
-            oThis.highlightSuggestion(oTarget);
-        } else {
-            oThis.textbox.focus();
-        }
-    };
     document.body.appendChild(this.layer);
 };
 
@@ -91,12 +71,10 @@ AutoSuggestControl.prototype.createDropDown = function () {
 AutoSuggestControl.prototype.getLeft = function () /*:int*/ {
     var oNode = this.textbox;
     var iLeft = 0;
-
     while (oNode.tagName != "BODY") {
         iLeft += oNode.offsetLeft;
         oNode = oNode.offsetParent;
     }
-
     return iLeft;
 };
 
@@ -141,17 +119,15 @@ AutoSuggestControl.prototype.handleKeyDown = function (oEvent /*:Event*/) {
  */
 AutoSuggestControl.prototype.handleKeyUp = function (oEvent /*:Event*/) {
     var iKeyCode = oEvent.keyCode;
-    //for backspace (8) and delete (46), shows suggestions without typeahead
     if (iKeyCode == 8 || iKeyCode == 46) {
         this.provider.requestSuggestions(this);
     //make sure not to interfere with non-character keys
     } else if (iKeyCode < 32 || (iKeyCode >= 33 && iKeyCode < 46) || (iKeyCode >= 112 && iKeyCode <= 123) ) {
         //ignore
     } else if (oEvent.ctrlKey) {
-	iKeyCode = 0;
         this.hideSuggestions();
     } else {
-        //request suggestions from the suggestion provider with typeahead
+        //request suggestions from the suggestion provider
         this.provider.requestSuggestions(this);
     }
 };
@@ -227,11 +203,15 @@ AutoSuggestControl.prototype.init = function () {
 AutoSuggestControl.prototype.nextSuggestion = function () {
     var cSuggestionNodes = this.layer.childNodes;
 
-    if (cSuggestionNodes.length > 0 && this.cur < cSuggestionNodes.length-1) {
+    if (!cSuggestionNodes.length)
+        return;
+
+    if (this.cur == cSuggestionNodes.length-1)
+        this.cur = -1;
+
     var oNode = cSuggestionNodes[++this.cur];
     this.highlightSuggestion(oNode);
     this.textbox.value = oNode.firstChild.nodeValue;
-    }
 };
 
 /**
@@ -242,24 +222,15 @@ AutoSuggestControl.prototype.nextSuggestion = function () {
 AutoSuggestControl.prototype.previousSuggestion = function () {
     var cSuggestionNodes = this.layer.childNodes;
 
-    if (cSuggestionNodes.length > 0 && this.cur > 0) {
+    if (!cSuggestionNodes.length)
+        return;
+
+    if (this.cur == -1 || this.cur == 0)
+        this.cur = cSuggestionNodes.length;
+
     var oNode = cSuggestionNodes[--this.cur];
     this.highlightSuggestion(oNode);
     this.textbox.value = oNode.firstChild.nodeValue;
-    }
-};
-
-/**
- * Selects a range of text in the textbox.
- * @scope public
- * @param iStart The start index (base 0) of the selection.
- * @param iLength The number of characters to select.
- */
-AutoSuggestControl.prototype.selectRange = function (iStart /*:int*/, iLength /*:int*/) {
-    if (this.textbox.setSelectionRange) {
-        this.textbox.setSelectionRange(iStart, iLength);
-    }
-    this.textbox.focus();
 };
 
 /**
@@ -269,6 +240,7 @@ AutoSuggestControl.prototype.selectRange = function (iStart /*:int*/, iLength /*
  * @param aSuggestions An array of suggestions for the control.
  */
 AutoSuggestControl.prototype.showSuggestions = function (aSuggestions /*:Array*/) {
+    var oThis  = this;
     var oDiv = null;
     this.layer.innerHTML = "";  //clear contents of the layer
 
@@ -282,6 +254,21 @@ AutoSuggestControl.prototype.showSuggestions = function (aSuggestions /*:Array*/
     this.layer.style.top = (this.getTop()+this.textbox.offsetHeight) + "px";
     this.layer.style.visibility = "visible";
     this.layer.style.position = "absolute";
+    this.layer.onmousedown =
+    this.layer.onmouseup =
+    this.layer.onmouseover = function (oEvent) {
+        var oEvent = oEvent || window.event;
+        var oTarget = oEvent.target || oEvent.srcElement;
+
+        if (oEvent.type == "mousedown") {
+            oThis.textbox.value = oTarget.firstChild.nodeValue;
+            oThis.hideSuggestions();
+        } else if (oEvent.type == "mouseover") {
+            oThis.highlightSuggestion(oTarget);
+        } else {
+            oThis.textbox.focus();
+        }
+    };
 };
 
 /**
@@ -295,10 +282,9 @@ FormSuggestions.prototype.requestSuggestions = function (oAutoSuggestControl /*:
 
     if (!this.suggestions)
         return;
-    if (!sTextboxValue.length)
-        return;
 
     //search for matching suggestions
+    if (sTextboxValue.length)
         for (var i=0; i < this.suggestions.length; i++) {
              if (this.suggestions[i].toLowerCase().indexOf(sTextboxValue) == 0) {
                  aSuggestions.push(this.suggestions[i]);

extensions/formhistory.c

@@ -38,13 +38,13 @@ formhistory_prepare_js ()
 
    gchar* data_path = g_build_filename (MDATADIR, PACKAGE_NAME, "res", NULL);
    file = g_build_filename (data_path,"/autosuggestcontrol.js",NULL);
-   if (!g_file_test (file, G_FILE_TEST_EXISTS))
+   if (g_access (file, F_OK) != 0)
        return FALSE;
    g_file_get_contents (file, &autosuggest, NULL, NULL);
    g_strchomp (autosuggest);
 
    file = g_build_filename (data_path,"/autosuggestcontrol.css",NULL);
-   if (!g_file_test (file, G_FILE_TEST_EXISTS))
+   if (g_access (file, F_OK) != 0)
        return FALSE;
    g_file_get_contents (file, &style, NULL, NULL);
    g_strchomp (style);
@@ -58,7 +58,6 @@ formhistory_prepare_js ()
 
    jsforms = g_strdup_printf (
         "%s"
-        "window.addEventListener ('load', function () { initSuggestions (); }, true);"
         "window.addEventListener ('DOMContentLoaded',"
         "function () {"
         "   var styles = document.getElementsByTagName('style');"
@@ -66,6 +65,7 @@ formhistory_prepare_js ()
         "       if (styles[i].getAttribute('title') == 'formhistory')"
         "           return;"
         "   }"
+        "   initSuggestions ();"
         "   var mystyle = document.createElement('style');"
         "   mystyle.setAttribute('type', 'text/css');"
         "   mystyle.setAttribute('title', 'formhistory');"
@@ -215,8 +215,7 @@ formhistory_navigation_decision_cb (WebKitWebView*             web_view,
                  "}"
                  "dumpForm (document.getElementsByTagName('input'))";
 
-    if (webkit_web_navigation_action_get_reason (action) == WEBKIT_WEB_NAVIGATION_REASON_FORM_SUBMITTED
-     || webkit_web_navigation_action_get_reason (action) == WEBKIT_WEB_NAVIGATION_REASON_FORM_RESUBMITTED)
+    if (webkit_web_navigation_action_get_reason (action) == WEBKIT_WEB_NAVIGATION_REASON_FORM_SUBMITTED)
     {
         gchar* value = sokoke_js_script_eval (js_context, script, NULL);
         if (value)