Using the cut and copy commands via document.execCommand(), a text selection can be cut or copied to the user’s clipboard in Chrome 43+, Opera 29+ and IE 10+. This means we can now cater to a part of our web userbase with the copy to clipboard feature without using Flash. Let’s write some code to see these commands in action.
JavaScript document.execCommand() Web Method
The JS document.execCommand() method is quite interesting. It can be used to execute certain commands to play with an editable region that is achieved either via the contenteditable attribute or when the HTML document (of the main window or some iframe window) has been switched to designMode using this code:
document.designMode = 'on'; // or 'off' // or for an iframe iframeNode.contentDocument.designMode = 'on'; // or 'off')
Infact try the first snippet right in dev tools and see what happens 🙂
Continue reading “JavaScript document.execCommand() Web Method”
Quick Walkthrough of RSpec Mocks (Introduction) in Code
Before we go through a lot of code samples, make sure you understand the different testing terms like mocks, stubs and test doubles. That’ll help you understand this article much better as I use a lot of those terminologies while going through different code samples.
A test double is a generic term (for stubs and mocks) that represents a real object (but sort of fake) to which messages can be passed (method calls) and fake return values can be specified. It’s used in unit testing to test a particular system or object in isolation. In this article we’ll go through test doubles (mocks) in RSpec. Let’s see how to create a test double representing the object being faked.
Continue reading “Quick Walkthrough of RSpec Mocks (Introduction) in Code”
Stubbing/Mocking Rails.env with Rspec
This is a quick tip where I’ll show you how to stub (sometimes people also refer to it as mock, but I think stub is more technically correct in this case) Rails.env while writing unit tests for your application.
Android Pick/Select Image from Gallery with Intents
Sometimes in your Android application you’ll want the user to choose an image from the gallery that’ll be displayed by the application (and even uploaded to your servers) after the selection is made. In this article we’ll see how to invoke a single interface from which the user is able to select images across all his apps (like Gallery, Photos, ES File Explorer, etc.) and folders (Google Drive, Recent, Downloads, etc.) using Intents.
Continue reading “Android Pick/Select Image from Gallery with Intents”
Google Place API Autocomplete Service in Android Application
Recently in one of my android applications I wanted to obtain the user’s location in terms of city and country that they can feed from their (edit) profile section. So one way to do this is basically have two dropdowns or dialogs (or even open an entirely new activity where the user can search through entities and select one). One of them would display all the countries in which, once a selection is made, the other one will show a restricted set of cities based on the prior country selection. Now the number of cities in the world is large, so to do this we’ll need to get a database that contains all the countries and cities and then make sure we can query that over HTTP to get the cities based on what the user types into the app (autocomplete box). We’ve to make sure the response is really quick and doesn’t cause lags. We can also bundle all the city and country data into our app but then that’ll blow up the apk size.
Continue reading “Google Place API Autocomplete Service in Android Application”
Android Send and Receive SMS (Text and Data/Binary) Messages with SmsManager and Intents
There’ll be times when you’ll want to allow the users to send SMS messages directly from your app to other numbers (destination). The Android SDK does support to capability of sending SMS/MMS messages in two ways (from your app):