Expert Oracle Application Express Plugins: Building Reusable by Martin DSouza

By Martin DSouza

Specialist Oracle program show Plugins is your “go to” ebook at the groundbreaking plugin structure brought in Oracle program show 4.0. utilizing the hot APEX performance, you could create well-packaged, documented, reusable parts and reliably leverage your coding investments throughout many purposes. elements you create can outline new merchandise and area kinds, specify validation procedures, and current dynamic activities to buyer purposes. you could layout cutting edge and colourful how you can reveal info, similar to showing the temperature utilizing a picture of a thermometer, or showing revenues pace within the kind of an car speedometer. the recent plugin structure is certain to create a tidal wave of creativity.

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Settings: File Prefix field Standard attributes define what standard options are available for the application developer to use. To start, check the options as shown in Figure 3-8. Choosing standard attributes Including JavaScript Code The next thing to do is add the JavaScript code to display the calendar and add constraints so the from and to dates are within a valid range. To display the date picker, you’ll use jQuery UI date picker, which is the same tool that APEX uses for the standard date picker.

The second is to integrate the JavaScript code with the plug-in. info CHAPTER 3 ■ ITEM PLUG-INS The first step is to write the JavaScript code to support the from and to date pickers. The easiest way to do this is to create a simple HTML file and build a proof of concept. This is a very important step since things can become complex when integrating into a plug-in. In order to save time, you will not need to do this step in this book; however, it is highly recommended when creating your own plug-ins from scratch.

In the Settings region, set the following values: Type: Select List Required: Yes 5. The next logical step is to add a value for the list of values. The catch is that if you click the Add Value button it will submit the page and save the custom attribute. Since you set this as a required attribute, you need to define a default value first. In the Default Value region, set the default value to “focus”. 6. You can now add values to the list of values. In the List of Values region, click the Add Value button, as shown in Figure 3-13.

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