Another open source project for developers.

DejalIntervalPicker is a custom Mac control similar to NSDatePicker, but for time intervals or ranges.

This project was started several years ago for Time Out 2, but got put aside while I worked on contract projects. I've just finished it off and released it for others to enjoy. It will be making an appearance in Time Out 2 as of the next alpha release.

Requirements

• OS X 10.10 or later recommended, but should work back to 10.7.
• Objective-C language.
• ARC.
• Dependency: the DejalObject project.

Features

• A custom control with an amount or amount range, units, and stepper.
• Like NSDatePicker, editing components separately, with a stepper.
• Can set minimum and maximum amounts.
• Can get/set the interval as a DejalInterval, as individual values, or as a NSTimeInterval.
• Can have either a single amount or a range of amounts.
• Can optionally filter the range to ensure the first amount is smaller (or equal to) the second one, or vice versa.
• Can control which units to include.
• Can navigate between components via Tab and Shift-Tab and left/right arrow keys, or clicking.
• Can type amounts just like in the date picker, and units with auto-completion.
• Can increment and decrement amounts and units via up/down arrow keys, +/- keys, or the stepper.
• Can increment/decrement in steps of 5 via Shift/Option/Ctrl and up/down arrow keys, or Page Up/Down.
• Can go to the first/last valid values via Home/End.
• Can display a drop-down menu of suggested legal amounts or units via the spacebar or clicking on the selected value.
• Supports regular, small and mini sizes.
• Supports properties, key-value coding, and bindings.
• Supports IB_DESIGNABLE and IBInspectable, so the picker can be configured in IB.
• A demo project is included.

Usage

1. Include the DejalIntervalPicker.h and DejalIntervalPicker.m files in your project. Also include at least DejalObject.h, DejalObject.m, DejalInterval.h and DejalInterval.m from the DejalObject project.
2. In Interface Builder for your xib or storyboard, drag a custom view to your view or window.
3. In the Identity inspector, change the Custom Class of the view to DejalIntervalPicker.
4. In the Size inspector, add a Placeholder Intrinsic Size of 150 width and 22 height if using Auto Layout, or set the view to that size for auto-resizing.
5. In the Attributes, configure the desired attributes like the using range, initial amounts, and which units to include.
6. In your controller, you can also configure the picker via methods like usingRange, includeForever, firstAmount, and others; see the demo project for examples.
7. Populate the picker value by setting the amount(s) and units, or setting the interval from a DejalInterval instance.
8. Get the picker value via the same properties: either amounts(s) and units directly, or the interval instance.
9. See DejalInterval for several useful methods and properties, e.g. to get a string representation of the interval.

You can get the code and more information from the Dejal Open Source page.