/*
movieSwap.js
This file contains functions for swapping YouTube movies.
*/
/*
Example:
// Declare the movie data list
var _movieDataList = new Array(
{'title':'Movie1','desc':'This is my favorite movie','hash':'...', 'url':'http://...'},
{'title':'Movie2', 'desc':'This is an ok movie','hash':'...','url':'http://...'});
[...]
Next >
*/
// Function: swapMovie
// Description: inserts a movie into a block element
// Parameters:
// containerId -- id of the iframe where the movie will be inserted
// titleId -- id of the element where the title will be displayed (can be empty string)
// descId -- id of the element where the description will be displayed (can be empty string)
// movieData -- an associative array of the following information:
// 'title' -- the movie title
// 'desc' -- the movie description
// 'url' -- the url of the movie
function swapMovie(containerId, titleId, descId, movieData)
{
var container = document.getElementById(containerId);
if (!container) return false;
var title = document.getElementById(titleId);
var desc = document.getElementById(descId);
if (title) title.innerHTML = movieData["title"];
if (desc) desc.innerHTML = movieData["desc"];
container.src = movieData["url"];
return true;
}
// Function: swapMovie_Hash
// Description: similar to swapMovie, but takes a the movie hash value rather than the url
// Parameters:
// containerId
// titleId
// descId
// movieData -- assoc. array with the follow values:
// 'title' -- movie title
// 'desc' -- movie description
// 'hash' -- hash locator for the movie
function swapMovie_Hash(containerId, titleId, descId, movieData)
{
var container = document.getElementById(containerId);
if (!container) return false;
var title = document.getElementById(titleId);
var desc = document.getElementById(descId);
if (title) title.innerHTML = movieData["title"];
if (desc) desc.innerHTML = movieData["desc"];
var movieHash = movieData["hash"];
//container.innerHTML = "";
container.src = "http://www.youtube.com/v/"+movieHash;
return true;
}
// Function: nextMovie
// Description: Loads the next movie in the list of movies using an internal
// index variable.
// Parameters:
// containerId
// titleId
// descId
// movieDataList -- an array of associative arrays containing information
// needed to load the movie.
var _g_nextMovieIdx = 0;
function nextMovie(containerId, titleId, descId, movieDataList)
{
if (_g_nextMovieIdx >= movieDataList.length || _g_nextMovieIdx < 0)
_g_nextMovieIdx = 0;
swapMovie(containerId, titleId, descId, movieDataList[_g_nextMovieIdx++]);
}
// Function: setCurrentMovie
// Description: Sets the current movie to synchronize the "nextMovie" function
// for the case when the user did not use "nextMovie" to load the movie.
// Parameters:
// idx -- index of the current movie that was loaded
function setCurrentMovie(idx)
{
_g_nextMovieIdx = idx + 1;
}