BWToolkit is a BSD licensed plugin for Interface Builder 3 that contains commonly used UI elements and other useful objects. Using these objects is as simple as dragging them from the library to your canvas or document window.
With the Selectable Toolbar item in this plugin, you’ll be able to create preferences windows and tabbed sheets without writing a line of code. Using BWToolkit to create a preferences window or a tabbed sheet is radically simpler than conventional means. You don’t have to write a controller class or fiddle with plists and multiple nib/xib files. It’s drag and drop.
BWToolkit contains a suite of controls for transparent windows (or HUD windows). Provided controls include a button, pop-up button, check box, slider, text field, text view, table view, and a check box cell for a table view. If you find yourself needing a much wider array of controls than the ones available here, a standard panel may be more appropriate for your particular interface.
The plugin includes an anchored button bar, anchored buttons, and unanchored buttons. An anchored button bar is one that is placed directly below a view (in other words, anchored to that view). Anchored button bars often appear at the bottom left of windows below source lists (like in Mail.app), below a table view with padding below the bar (like the Network pref pane), or run all the way across the bottom of the window (like in AppZapper). The anchored button bar library item handles all three of these modes.
Unanchored buttons are usually placed below a table view with a bit of padding separating the view from the buttons. They’re often configured to have a plus button beside a minus button. The unanchored buttons are similar to “Gradient Buttons” in Interface Builder, but tweaked to aesthetically replicate the +/- buttons in System Preferences. For instance, when a button is disabled, only the glyph dims, so the group of buttons remain a visually cohesive unit.
Using the anchored button bar and the gradient split view included in the plugin, you can easily create a Mail.app style interface. When an anchored button bar is dropped in a vertical split view, the split view is automatically configured to resize when the user drags the resize handle on the button bar. It’s also configured to keep the source list the same width while the window is resized - the standard split view behavior is to resize all of its subviews. Lastly, the left most view is constrained within a minimum and maximum width (which is configurable in the button bar inspector).
With the plugin, you’ll be able to add a bottom bar to a window and it will appear on your canvas. This makes sizing and placement of controls on or around the bottom bar a trivial exercise. There are four bottom bars to choose from: mini size, small size, regular size, and one for sheets.
There are also some controls for bottom bars included in the plugin. You’ll find plus and minus glyphs for regular size Round Textured buttons, a text field with an inset (or etched) appearance, and a textured slider. The textured slider comes pre-configured with the two most popular indicators in Mac apps: speaker and photo. If you opt to use them, you’ll find that the click actions for the two indicators are conveniently already hooked up to the slider.