Difference between revisions of "JavaScript API"
From ElphelWiki
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if (camera.ptz) { // if the function is defined | if (camera.ptz) { // if the function is defined | ||
| − | document.getElementById('ptz_control') = new Template.Ptz(camera) | + | document.getElementById('ptz_control').innerHTML = (new Template.Ptz(camera)).source() |
} | } | ||
Revision as of 11:07, 19 November 2005
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This work is under development
Authors : Khlut, zimbatm
The javascript library is intended to be used in different environments. The usage scenarios are HTML interfaces, which can easily be extended with the library. Interfaces can also be created, by using a simple extension syntax.
Goals
- Easy to embed in existing HTML
- Auto-configurable
- HTML generation
Essay
Configuration
The configuration of a camera goes through a new object's creation.
The object automatically retrieves the data using asyncronous Http requests. Optionally, you can provide the data trough an object to avoid too much queries.
Example:
camera = new Camera('http://192.168.1.3')
alert(camera.model_name()) // fetches the data and returns it, the value gets cached
camera2 = new Camera('http://zimba:1234@192.168.1.3', {
api: Api.Axis,
model_name: '203'})
alert(camera.model_name()) // returns the data directly
Api
We need a way to make the lib compatible with the different apis and api versions.
Some implementation ideas :
if (camera.ptz) { // if the function is defined
document.getElementById('ptz_control').innerHTML = (new Template.Ptz(camera)).source()
}
HTML Generation
Template.Image = function(camera_source) {
this.template = '<img src="'+camera_source+'" />'
}
Template.prototype = new Template()
image = new Template(camera.picture_path())
document.getElementById('some_element').innerHTML = image.source()
