Changes for page How to add an image to a Component
Last modified by Lachlan Scott on 2007/07/12 19:54
From version 5.1
edited by Lachlan Scott
on 2007/07/12 19:05
on 2007/07/12 19:05
Change comment:
There is no comment for this version
To version 6.1
edited by Lachlan Scott
on 2007/07/12 19:54
on 2007/07/12 19:54
Change comment:
There is no comment for this version
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... ... @@ -1,20 +1,39 @@ 1 1 **Problem:** you want to add an image to the HTML page of a Component; being an highly skilled application developer with the good sense to apply your talents with WebObjects :D , you expect to do this by using the <img src=" "> tag in the HTML, and are confused as to how to achieve it in WebObjects. 2 2 3 -**Discussion:** WebObjects provides the WOImage tag to manage images in component pages which obviates the 'img' tag, and which can be somewhat unintuitive for the beginning WO developer. The tag supports all the expected HTML img attributes as far as I can tell; needs checking and the 'filename' attribute which references the location of the image to WebObjects. The images themselves must 3 +**Discussion:** WebObjects provides the WOImage tag to manage images in component pages which obviates the 'img' tag, and which can be somewhat unintuitive for the beginning WO developer. The tag supports all the expected HTML img attributes WOL:as far as I can tell; needs checking and the 'filename' attribute which references the location of the image to WebObjects. The images themselves must 4 4 5 -**Question:** Yeah, but why can't I just make a static reference in the usual way? Well actually, you can link required, but you don't really want to explanation required: load balancing, web server resources, etc ,and the WOImage tagisanelegantsolution thatyouwillcome to appreciate in time; trust us, we'redoctors. Well, some of us are, anyway. ;-)5 +**Question:** Yeah, but why can't I just make a static reference in the usual way? Well actually, you can WOL:link required, but you don't really want to explanation required: load balancing, web server resources, etc. The WOImage solution is elegant, and it will provide 6 6 7 7 **Solution:** 8 8 9 9 1. Create a suitable image directory structure in your project 10 -1. I mport the image intothe directoryof your choice11 -1. AddtheWOImagetagtoyourpage12 -1. Reference the image using the 'filename' attribute10 +1. In the filesystem, add the image into your chosen directory 11 +1. Include the folders and image file as WebServerResources 12 +1. Add a WOImage tag to your page and reference the image in the .wod mapping using the 'filename' attribute 13 13 14 14 \\ 15 15 16 16 1. Create a suitable image directory structure in your project 17 -11. In Eclipse Package Explorer, right-click the project and select New > Folder (see image) and name the folder something appropriate such as 'images' 18 -11. Proceed in this way, building the structure you want 17 +11. In Eclipse Package Explorer, right-click the project and select New > Folder (image pending) and name the folder something appropriate such as 'images' 18 +11. Choose the parent folder, which is the project you're working in (image pending) 19 +11. Proceed in this way, building the directory structure you want 20 +1. In the filesystem, add the image into your chosen directory 21 +11. WOL:this seems clunky and there may be a better way of doing it from Eclipse directly 22 +11. Eclipse updates the view showing your added image file 23 +1. Include the folders and image file as WebServerResources 24 +11. In the Package Explorer, right-click the top folder, and select WOLips Tools > Include as WebServerResource WOL:image pending 25 +11. Notice that your folder structure has been added to the build directory 26 +1. Add a WOImage tag to your page and reference the image in the .wod mapping using the 'filename' attribute 27 +11. In the WOLips perspective, open the component to which you wish to add your image, and double-click the .wod file eg. Main.wod; it should open the .HTML and .wod files in WOLips Builder view 28 +11. Use the WOLips button at the top of the screen to insert a WOImage tag in the .html file and a binding in the .wod file (image pending) 29 +11. Name the WebObject something appropriate (image pending) 30 +11. Use code completion (cntrl-space) in the .wod file to display the usual <IMG> attributes (image pending), select filename 31 +11. Complete the filename attribute to match the path to your image, leaving out the leading '/'; in our example, that is 19 19 20 -In the WOLips perspective, double-click the component to which you want to add the image 33 +LoginBackground : WOImage { 34 +filename = "images/backgrounds/loginBackground.gif"; 35 +} 36 + 37 +1. 38 +11. Run your application, with any luck, it should All Just Work⢠(image pending) :-) 39 + \\