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1. Gbrowser. stop other tabs how to#
2. Gbrowser. stop other tabs code#

Before we can change anything, we have to search and read existing code in order to understand where to begin-this is the standard pattern for open source and Mozilla development. The second and third methods are useful, as they provide us with a unique string we can search for in the code. Right-Click an existing tab and select New Tab.In our case, we can focus on the various methods for creating a new tab: How do you begin? First, let's start at the top and find some UI notation we can search for in the code. However, difficult isn't the same as impossible. But you still have to figure out where that simple code needs to go. The change you have in mind might be quite simple, in the end (ours is). It's one thing to say you'd like to change the browser's behaviour, but quite another to actually do it. The 'Where': finding the right spot to make the changes Open another new tab and notice its placement in the list (i.e., it should be last).Start Firefox and open a series of tabs (i.e., CTRL+T).Here are the steps to reproduce this (commonly shortened to STR, especially in bugzilla): However, often one opens a tab in order to work on something associated with the current tab, that is, if I'm working in tab 6, I'd like the new tab to be placed at position 7 and not 21 (assuming there are 20 tabs open). The 'What': change the way new tabs get created in FirefoxĬurrently, when you create a new tab in Firefox, it is appended to the end of the list of currently opened tabs. (If you have trouble building, as per bug 478871, try 4aed53dcf692 instead).So, to follow along on your computer, download the correct revision of the source: Later changes to Firefox have changed these files. The goal of this exercise is to give you confidence in order to try similar things on your own, expose you to some helpful techniques, and to highlight the importance of using existing code in open source and Mozilla.Īll sample code listed in this walkthrough was taken from mozilla-central revision f4800de50e03.

Gbrowser. stop other tabs how to#

In so doing, we'll learn how to go from an idea for a top-level UI feature change, to searching and studying the code, to making and testing this change. The change we will make will be done directly in the Firefox source code (note: this change can also be done as an extension, which we will do in another walkthrough). In this walkthrough, we will explore the process of making a small change to the behaviour of Firefox. 4 The 'How': the necessary changes to the code.3 The 'Where': finding the right spot to make the changes.2 The 'What': change the way new tabs get created in Firefox.