I've been searching and reading how firefox addons manages preferences, but all the samples I found involves GUI windows and other complex things I don't need.
What I need is, I have a list of some regex patterns, which needs to be updated often without user interaction whenever it's needed.
So I want to have the initial regex stored in the firefox addon like preferences but without any gui to edit them, and then be able to edit those hardcoded preferences.
Can someone show me an example on how to do this?
I don't want a full example, just how should I store these preferences and then edit them programmatically, without involving gui windows like all the .xul files I found does.
Something like this:
Components.utils.import("resource://gre/modules/Services.jsm");
// Reading the preference
var regexp = /foobar/; // default value
try
{
regexp = new RegExp(Services.prefs.getCharPref("extensions.myExtension.regexp"));
}
catch (e)
{
// Errors are expected, the preference might not exist yet
}
// Setting the preference
Services.prefs.setCharPref("extensions.myExtension.regexp", regexp.source);
You will be able to see this preference under about:config. More code examples
Related
I am building a website where I want to allow people to code in almost any language that the Ace editor supports. Right now I have it redirect if they try to load a language that either isn't supported by Ace, or that I didn't list in my supported languages. I only have a few languages that I allow to run (because I haven't got others to work or don't know how to), and for all those other languages that aren't run-supported, I want to load the Ace editor with a note saying that the language they loaded isn't supported for running, but I want it to be a comment in that language.
I tried inserting the text using editor.setValue([message], -1). Then set the focus on the editor using editor.focus(). Then I select all the text with editor.selectAll(). And then use the editor.toggleCommentLines() to make it a comment. For some reason this doesn't work, and I am not sure why.
I know that I could just look up how to write comment in each of the languages that I am allowing, and then convert the message into a comment before inserting it into the editor, but I want an easier way if possible.
Is there an easier way to do it? Or should I just do what I said that I could?
Since I answered my own question, I want to ask another to see if anyone has the answer for this:
When in the Ace editor you can press CTRL+/ to toggle line comments. But if you press CTRL+SHIFT+/ it will toggle multiline comments. I don't see a function for this in the Ace editor documentation but because it works with a keyboard shortcut, there must be a way to do it programmatically, right?
If someone could figure this out, that would be great!
a user found it! See his comment to see the answer to this part.
I was trying a few more things, and one of them was doing a setTimeout on the editor.toggleCommentLines(), and that worked. The timeout worked best if I used 150ms or higher (I started with 2000 just to see if it worked at all, and then slowly moved down).
So the following code works to automatically insert a message and comment it out:
const editor = ace.edit([element]);
editor.setValue([message], 0); // You can also leave the second parameter blank, 0 is the default which automatically selects all.
setTimeout(() => {
editor.toggleCommentLines();
}, 150); // 150ms or more works best
You may also notice that this method clears out 2 methods that I was previously using. There are two reasons for this:
When using 0 instead of -1 for the second parameter of editor.setValue() it selects all the text.
Because we are using the editor variable, the editor doesn't need to be in "focus".
I'm working on a concept that works like copy & paste but uses my own algorithm instead of using the clipboard.
We have users that use many different programs that contain part numbers. This is how my concept would work.
User highlights part number from any application (word, excel, pdf, JDE, etc)
Either by hotkey or clicking on another application the user launches my routine.
My routine grabs that text from the original application and processes it accordingly.
I know how to use the clipboard to get text.
What I'm not sure of is how to get currently selected text from the application that was active prior to running my code? Do I need to force my user to copy to clipboard first and then run my app or can I create my own copy/paste type windows add-in?
Preferred VB for this but can also use C++ or C# if easier.
As to the question why, because we want to the action to be seamless to the user. There will be several behind the scenes actions that take place and then the user will be presented a browser with pertinent information related to that part number. Ultimately, I don't want an in-between screen to pop up, but rather completely hidden from the user. If I require them to copy and then run my routine then I'm adding in one extra step to the user path that I'm hoping to avoid.
I looked into right click menu context a bit but found that each program can have their own override. I wasn't able to locate a way to globally override all right click context menus to include a new action.
From this article:
var element = AutomationElement.FocusedElement;
if (element != null)
{
object pattern;
if (element.TryGetCurrentPattern(TextPattern.Pattern, out pattern))
{
var tp = (TextPattern) pattern;
var sb = new StringBuilder();
foreach (var r in tp.GetSelection())
{
sb.AppendLine(r.GetText(-1));
}
var selectedText = sb.ToString();
}
}
It's in C# but it should be pretty trivial to translate.
I have an app, where I generate text (about 500 characters), and I would like the user to have some means of copying that text for use outside of the application.
I don't want to use any capabilities for this app (like web, or contacts).
Here's what I've tried (and why it's failed)
TextBox. IsReadOnly = true; SelectAll();
Can't SelectAll a read only text box
Turn off read only, hide the SIP
Can't hide the SIP on a (non-read-only) TextBox that the user is interacting with (I want to enable the user to copy, so needs to interact with the control)
allow edits, show sip, SelectAll()
The "copy" icon doesn't appear unless the user chose to select text
On selection changed (actually changed), SelectAll()
The "copy" icon doesn't appear unless the user selected the text? The copy icon appears erratically, nothing I would call an acceptable user experience.
So at this point, I'm quite far from what I want in a user experience, and I still don't have anything that works. Any suggestions?
Some other possible ways to answer my question include:
"How do I force the copy button to appear above text I programatically selected?"
"How do I change the selection behavior of a tap in a text box?"
Afaik there are some limitations to the Windows Phone 7 Clipboard:
Works only in TextBox and can only copy text upon users wish
Text is only kept until device gets locked. If your device gets locked, the clipboard will be wiped clean
Even if you try Clipboard.SetText Method, you will notice the SecurityException if you call this method without the users interaction. This is to keep the users data under control so that no rogue app can copy unrecognized Text.
But you could try Matt Laceys WP7Clipboard. It saves the clipboard content inside an image and can even copy bitmaps.
Try restyling the textbox as per http://mobileworld.appamundi.com/blogs/peterfoot/archive/2011/02/08/copyable-textblock-for-windows-phone.aspx
Here's what I eventually got mostly working
private void Export(StackPanel stacker)
{
var exportHeader = new TextBlock();
exportHeader.Text = "Export";
stacker.Children.Add(exportHeader);
var exportBox = new TextBox();
stacker.Children.Add(exportBox);
//exportBox.IsReadOnly = true; // hides SIP, but causes an exception with SelectAll() (pre-Mango, I haven't tried on Mango yet)
exportBox.FontSize = 1;
exportBox.Text = textToExport;
exportBox.GotFocus += new System.Windows.RoutedEventHandler((send, ev) =>
{
((TextBox)send).SelectAll();
});
exportBox.Focus();
}
Apparently, making the font size 1 makes the difference here, maybe because all of the text can appear on the screen at once? Who knows.
I accepted this answer, because no one else posted a better solution. I would appreciate a better solution. If you can get the SIP to go away, that would be awesome.
I have a page with possibly several content-editable iframes (editors).
Now I would like to use my custom Firefox extension to do the following:
Setting the cursor to the end (or last HTML element) of the editor the cursor actually is in.
I found many solutions to get the cursor's position, but I need one to set it.
Any suggestions?
XPCOM likely includes such functionality as part of the testing rig. Mochitest at least is capable of this (again, probably though XPCOM).
On the other hand, when a user is on the system this a generally a gross violation of user interaction practices. Be sure you have a good justification for doing it. It may seem convenient but what if they're doing something else whilst using your addon? I usually have various apps open at once, Fx extensions are only part of that. I don't want it taking control of my mouse, EVER.
Is there something wrong with setting the focus? At least that only forces the user's hand at a window level.
It also suspect it make it quite difficult to get past AMO review. You'd have to justify why it was necessary to invoke such low-level functionality. If you interact with a window, for example, the window might be able to affect the input of your functions which in turn control the mouse... and then a random web site has access to the user's window!
Found the solution to my problem myself. This code myself will set the Cursor position to the last Paragraph of my editor:
var frame = window.content.document.getElementsByTagName('iframe')[2];
var win = frame.contentWindow;
var editingSession = Components.classes["#mozilla.org/editor/editingsession;1"].createInstance(Components.interfaces.nsIEditingSession);
var editor = editingSession.getEditorForWindow(win);
selection = window.getSelection();
var body = frame.contentDocument.body;
text = frame.contentDocument.createTextNode(".");
body.lastChild.appendChild(text); // add textnode to be selected
var range = editor.document.createRange();
range.setStartBefore(text);
range.setEndAfter(text);
editor.selection.removeAllRanges();
editor.selection.addRange(range);
body.lastChild.removeChild(text); // remove Child
I'm looking for a way to check to see that a window I am creating is visible and entirely on one monitor. I have seen too many programs do nasty things when they try to restore their position and the place no longer exists and I don't want my program to be vulnerable to this.
How do I find the information on the actual layout of the monitors?
The Screen class contains a lot of functionality for this.
You should check for yourself if a form is outside the Bounds of the Screen, but this is pretty straightforward:
if (!Screen.GetWorkingArea(myWindow).Bounds.Contains(myWindow.Bounds)) {
// Adjust location
}
Just a small syntax correction, or perhaps an update in Visual Studio 2012:
if (!Screen.GetWorkingArea(myWindow).Contains(myWindow.Bounds))
{
//Adjust location
}