From 50c159e9bb88784ac3a4cc8d18f4fb8ab1a16c77 Mon Sep 17 00:00:00 2001 From: Alexander Butenko Date: Tue, 6 Oct 2009 20:35:56 +0200 Subject: [PATCH] Initial code for the form history extension --- data/autosuggestcontrol.css | 16 ++ data/autosuggestcontrol.js | 366 ++++++++++++++++++++++++++++++++++++ extensions/formhistory.c | 205 ++++++++++++++++++++ 3 files changed, 587 insertions(+) create mode 100644 data/autosuggestcontrol.css create mode 100644 data/autosuggestcontrol.js create mode 100644 extensions/formhistory.c diff --git a/data/autosuggestcontrol.css b/data/autosuggestcontrol.css new file mode 100644 index 00000000..a7ca89d2 --- /dev/null +++ b/data/autosuggestcontrol.css @@ -0,0 +1,16 @@ +div.suggestions { + -moz-box-sizing: border-box; + box-sizing: border-box; + border: 1px solid #cccccc; + text-align: left; + background-color: #ffffff; + position: absolute; +} +div.suggestions div { + cursor: default; + padding: 0px 3px; +} +div.suggestions div.current { + background-color: #3366cc; + color: white; +} diff --git a/data/autosuggestcontrol.js b/data/autosuggestcontrol.js new file mode 100644 index 00000000..0b583360 --- /dev/null +++ b/data/autosuggestcontrol.js @@ -0,0 +1,366 @@ +/** + * An autosuggest textbox control. + * from Nicholas C. Zakas (Author) example: http://www.nczonline.net/ + * @class + * @scope public + */ +function AutoSuggestControl(oTextbox /*:HTMLInputElement*/, + oProvider /*:SuggestionProvider*/) { + /** + * The currently selected suggestions. + * @scope private + */ + this.cur /*:int*/ = -1; + /** + * The dropdown list layer. + * @scope private + */ + this.layer = null; + /** + * Suggestion provider for the autosuggest feature. + * @scope private. + */ + this.provider /*:SuggestionProvider*/ = oProvider; + /** + * The textbox to capture. + * @scope private + */ + this.textbox /*:HTMLInputElement*/ = oTextbox; + //initialize the control + this.init(); + +} + +/** + * Autosuggests one or more suggestions for what the user has typed. + * If no suggestions are passed in, then no autosuggest occurs. + * @scope private + * @param aSuggestions An array of suggestion strings. + * @param bTypeAhead If the control should provide a type ahead suggestion. + */ +AutoSuggestControl.prototype.autosuggest = function (aSuggestions /*:Array*/, + bTypeAhead /*:boolean*/) { + //make sure theres at least one suggestion + if (aSuggestions.length > 0) { + if (bTypeAhead) { + this.typeAhead(aSuggestions[0]); + } + this.showSuggestions(aSuggestions); + } else { + this.hideSuggestions(); + } +}; + +/** + * Creates the dropdown layer to display multiple suggestions. + * @scope private + */ +AutoSuggestControl.prototype.createDropDown = function () { + + var oThis = this; + + //create the layer and assign styles + this.layer = document.createElement("div"); + this.layer.className = "suggestions"; + this.layer.style.visibility = "hidden"; + this.layer.style.width = this.textbox.offsetWidth + 10; + + //when the user clicks on the a suggestion, get the text (innerHTML) + //and place it into a textbox + 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); +}; + +/** + * Gets the left coordinate of the textbox. + * @scope private + * @return The left coordinate of the textbox in pixels. + */ +AutoSuggestControl.prototype.getLeft = function () /*:int*/ { + + var oNode = this.textbox; + var iLeft = 0; + + while(oNode.tagName != "BODY") { + iLeft += oNode.offsetLeft; + oNode = oNode.offsetParent; + } + + return iLeft; +}; + +/** + * Gets the top coordinate of the textbox. + * @scope private + * @return The top coordinate of the textbox in pixels. + */ +AutoSuggestControl.prototype.getTop = function () /*:int*/ { + var oNode = this.textbox; + var iTop = 0; + while(oNode.tagName != "BODY") { + iTop += oNode.offsetTop; + oNode = oNode.offsetParent; + } + return iTop; +}; + +/** + * Handles three keydown events. + * @scope private + * @param oEvent The event object for the keydown event. + */ +AutoSuggestControl.prototype.handleKeyDown = function (oEvent /*:Event*/) { + switch(oEvent.keyCode) { + case 38: //up arrow + this.previousSuggestion(); + break; + case 40: //down arrow + this.nextSuggestion(); + break; + case 13: //enter + this.hideSuggestions(); + break; + } +}; + +/** + * Handles keyup events. + * @scope private + * @param oEvent The event object for the keyup 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, false); + + //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 + this.provider.requestSuggestions(this, true); + } + + + +}; + +/** + * Hides the suggestion dropdown. + * @scope private + */ +AutoSuggestControl.prototype.hideSuggestions = function () { + this.layer.style.visibility = "hidden"; +}; + +/** + * Highlights the given node in the suggestions dropdown. + * @scope private + * @param oSuggestionNode The node representing a suggestion in the dropdown. + */ +AutoSuggestControl.prototype.highlightSuggestion = function (oSuggestionNode) { + for (var i=0; i < this.layer.childNodes.length; i++) { + var oNode = this.layer.childNodes[i]; + if (oNode == oSuggestionNode) { + oNode.className = "current" + } else if (oNode.className == "current") { + oNode.className = ""; + } + } +}; + +/** + * Initializes the textbox with event handlers for + * auto suggest functionality. + * @scope private + */ +AutoSuggestControl.prototype.init = function () { + + //save a reference to this object + var oThis = this; + + //assign the onkeyup event handler + this.textbox.onkeyup = function (oEvent) { + + //check for the proper location of the event object + if (!oEvent) { + oEvent = window.event; + } + + //call the handleKeyUp() method with the event object + oThis.handleKeyUp(oEvent); + }; + + //assign onkeydown event handler + this.textbox.onkeydown = function (oEvent) { + + //check for the proper location of the event object + if (!oEvent) { + oEvent = window.event; + } + + //call the handleKeyDown() method with the event object + oThis.handleKeyDown(oEvent); + }; + + //assign onblur event handler (hides suggestions) + this.textbox.onblur = function () { + oThis.hideSuggestions(); + }; + + this.textbox.onclick = function () { + oThis.hideSuggestions(); + }; + + + //create the suggestions dropdown + this.createDropDown(); +}; + +/** + * Highlights the next suggestion in the dropdown and + * places the suggestion into the textbox. + * @scope private + */ +AutoSuggestControl.prototype.nextSuggestion = function () { + var cSuggestionNodes = this.layer.childNodes; + + if (cSuggestionNodes.length > 0 && this.cur < cSuggestionNodes.length-1) { + var oNode = cSuggestionNodes[++this.cur]; + this.highlightSuggestion(oNode); + this.textbox.value = oNode.firstChild.nodeValue; + } +}; + +/** + * Highlights the previous suggestion in the dropdown and + * places the suggestion into the textbox. + * @scope private + */ +AutoSuggestControl.prototype.previousSuggestion = function () { + var cSuggestionNodes = this.layer.childNodes; + + if (cSuggestionNodes.length > 0 && this.cur > 0) { + 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*/) { + + //use text ranges for Internet Explorer + if (this.textbox.createTextRange) { + var oRange = this.textbox.createTextRange(); + oRange.moveStart("character", iStart); + oRange.moveEnd("character", iLength - this.textbox.value.length); + oRange.select(); + + //use setSelectionRange() for Mozilla + } else if (this.textbox.setSelectionRange) { + this.textbox.setSelectionRange(iStart, iLength); + } + + //set focus back to the textbox + this.textbox.focus(); +}; + +/** + * Builds the suggestion layer contents, moves it into position, + * and displays the layer. + * @scope private + * @param aSuggestions An array of suggestions for the control. + */ +AutoSuggestControl.prototype.showSuggestions = function (aSuggestions /*:Array*/) { + + var oDiv = null; + this.layer.innerHTML = ""; //clear contents of the layer + + for (var i=0; i < aSuggestions.length; i++) { + oDiv = document.createElement("div"); + oDiv.appendChild(document.createTextNode(aSuggestions[i])); + this.layer.appendChild(oDiv); + } + + this.layer.style.left = this.getLeft() + "px"; + this.layer.style.top = (this.getTop()+this.textbox.offsetHeight) + "px"; + this.layer.style.visibility = "visible"; + +}; + +/** + * Inserts a suggestion into the textbox, highlighting the + * suggested part of the text. + * @scope private + * @param sSuggestion The suggestion for the textbox. + */ +AutoSuggestControl.prototype.typeAhead = function (sSuggestion /*:String*/) { + + //check for support of typeahead functionality + if (this.textbox.createTextRange || this.textbox.setSelectionRange){ + var iLen = this.textbox.value.length; + this.textbox.value = sSuggestion; + this.selectRange(iLen, sSuggestion.length); + } +}; + + +/** + * Request suggestions for the given autosuggest control. + * @scope protected + * @param oAutoSuggestControl The autosuggest control to provide suggestions for. + */ +FormSuggestions.prototype.requestSuggestions = function (oAutoSuggestControl /*:AutoSuggestControl*/, + bTypeAhead /*:boolean*/) { + var aSuggestions = []; + var sTextboxValue = oAutoSuggestControl.textbox.value; + + if (sTextboxValue.length > 0){ + //search for matching suggestions + for (var i=0; i < this.suggestions.length; i++) { + if (this.suggestions[i].indexOf(sTextboxValue) == 0) { + aSuggestions.push(this.suggestions[i]); + } + } + } + //provide suggestions to the control + oAutoSuggestControl.autosuggest(aSuggestions, bTypeAhead); +}; + +function initSuggestions () { + var inputs = document.getElementsByTagName("input"); + for (i=0;i + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + +*/ + +#include + +#include +#include "config.h" + +#include +#if HAVE_UNISTD_H + #include +#endif + +static gchar* jsforms; + +static void +formhistory_prepare_js () +{ + gchar* autosuggest; + gchar* style; + guint i; + + /* FIXME: Don't hardcode paths */ + g_file_get_contents ("/usr/local/share/midori/autosuggestcontrol.js", &autosuggest, NULL, NULL); + g_strchomp (autosuggest); + + g_file_get_contents ("/usr/local/share/midori/autosuggestcontrol.css", &style, NULL, NULL); + g_strchomp (style); + i = 0; + while (style[i]) + { + if (style[i] == '\n') + style[i] = ' '; + i++; + } + g_print ("%s\n", style); + + jsforms = g_strdup_printf ( + "%s" + "window.addEventListener (\"load\", function () { initSuggestions (); }, true);" + "window.addEventListener ('DOMContentLoaded'," + "function () {" + "var mystyle = document.createElement(\"style\");" + "mystyle.setAttribute(\"type\", \"text/css\");" + "mystyle.appendChild(document.createTextNode(\"%s\"));" + "var head = document.getElementsByTagName(\"head\")[0];" + "if (head) head.appendChild(mystyle);" + "else document.documentElement.insertBefore(mystyle, document.documentElement.firstChild);" + "}, true);", + autosuggest, + style); + g_strstrip (jsforms); + g_free (style); + g_free (autosuggest); +} + +static gchar* +formhistory_build_js () +{ + const gchar* suggestions = "arr[\"txt1\"] = [\"Alabama\", \"Alaska\", \"Arizona\", \"Arkansas\"];" + "arr[\"txt2\"] = [\"Alabama\", \"Alaska\", \"Arizona\", \"Arkansas\"];"; + gchar* script = g_strdup_printf ("function FormSuggestions(eid) { " + "arr = new Array();" + "%s" + "this.suggestions = arr[eid]; }" + "%s", + suggestions, + jsforms); + return script; +} + +static void +formhistory_session_request_queued_cb (SoupSession* session, + SoupMessage* msg) +{ + gchar* method = katze_object_get_string (msg, "method"); + if (method[0] == 'P' && method[1] == 'O' && method[2] == 'S') + { + SoupMessageHeaders* hdrs = msg->request_headers; + SoupMessageHeadersIter iter; + const gchar* name, *value; + SoupMessageBody* body = msg->request_body; + + soup_message_headers_iter_init (&iter, hdrs); + while (soup_message_headers_iter_next (&iter, &name, &value)) + { + g_warning ("%s=%s\n", name, value); + } + soup_buffer_free (soup_message_body_flatten (body)); + g_warning ("BODY: %s\n", body->data); + } + g_free (method); +} + + +static void +formhistory_window_object_cleared_cb (GtkWidget* web_view, + WebKitWebFrame* web_frame, + JSContextRef js_context, + JSObjectRef js_window) +{ + webkit_web_view_execute_script (WEBKIT_WEB_VIEW (web_view), + formhistory_build_js ()); +} + +static void +formhistory_add_tab_cb (MidoriBrowser* browser, + MidoriView* view) +{ + GtkWidget* web_view = gtk_bin_get_child (GTK_BIN (view)); + SoupSession *session = webkit_get_default_session (); + g_signal_connect (web_view, "window-object-cleared", + G_CALLBACK (formhistory_window_object_cleared_cb), 0); + /* FIXME: Deactivate request-queued on unload */ + g_signal_connect (session, "request-queued", + G_CALLBACK (formhistory_session_request_queued_cb), 0); +} + +static void +formhistory_deactivate_cb (MidoriExtension* extension, + MidoriBrowser* browser); + +static void +formhistory_add_tab_foreach_cb (MidoriView* view, + MidoriBrowser* browser) +{ + formhistory_add_tab_cb (browser, view); +} + +static void +formhistory_app_add_browser_cb (MidoriApp* app, + MidoriBrowser* browser, + MidoriExtension* extension) +{ + midori_browser_foreach (browser, + (GtkCallback)formhistory_add_tab_foreach_cb, browser); + g_signal_connect (browser, "add-tab", G_CALLBACK (formhistory_add_tab_cb), 0); + g_signal_connect (extension, "deactivate", + G_CALLBACK (formhistory_deactivate_cb), browser); +} + +static void +formhistory_deactivate_tabs (MidoriView* view, + MidoriBrowser* browser) +{ + GtkWidget* web_view = gtk_bin_get_child (GTK_BIN (view)); + g_signal_handlers_disconnect_by_func ( + browser, formhistory_add_tab_cb, 0); + g_signal_handlers_disconnect_by_func ( + web_view, formhistory_window_object_cleared_cb, 0); +} + +static void +formhistory_deactivate_cb (MidoriExtension* extension, + MidoriBrowser* browser) +{ + MidoriApp* app = midori_extension_get_app (extension); + + g_signal_handlers_disconnect_by_func ( + extension, formhistory_deactivate_cb, browser); + g_signal_handlers_disconnect_by_func ( + app, formhistory_app_add_browser_cb, extension); + midori_browser_foreach (browser, (GtkCallback)formhistory_deactivate_tabs, browser); +} + +static void +formhistory_activate_cb (MidoriExtension* extension, + MidoriApp* app) +{ + KatzeArray* browsers; + MidoriBrowser* browser; + guint i; + + formhistory_prepare_js (); + browsers = katze_object_get_object (app, "browsers"); + i = 0; + while ((browser = katze_array_get_nth_item (browsers, i++))) + formhistory_app_add_browser_cb (app, browser, extension); + g_signal_connect (app, "add-browser", + G_CALLBACK (formhistory_app_add_browser_cb), extension); + + g_object_unref (browsers); +} + +MidoriExtension* +extension_init (void) +{ + MidoriExtension* extension = g_object_new (MIDORI_TYPE_EXTENSION, + "name", _("Form history filler"), + "description", _("Stores history of entered form data"), + "version", "0.1", + "authors", "Alexander V. Butenko ", + NULL); + g_signal_connect (extension, "activate", + G_CALLBACK (formhistory_activate_cb), NULL); + + return extension; +}