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New function Scholar.Items.getNewItemByType(itemTypeID [, parentFolderID] [, orderIndex]) to get empty Item object -- parentFolderID and orderIndex are optional

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This commit is contained in:
Dan Stillman 2006-05-18 20:09:01 +00:00
parent 7aecfd5190
commit 605510a635
1 changed files with 27 additions and 7 deletions
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34
chrome/chromeFiles/content/scholar/data_access.js
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@ -9,7 +9,9 @@ Scholar.Item = function(){
// Accept itemTypeID, folderID and orderIndex in constructor
if (arguments.length){
this.setType(arguments[0]);
this.setPosition(arguments[1],arguments[2]);
if (arguments.length>1){
this.setPosition(arguments[1], arguments[2] ? arguments[2] : false);
}
}
}
@ -309,16 +311,19 @@ Scholar.Item.prototype.setField = function(field, value, loadIn){
/*
* Move item to new position and shift surrounding items
*
* N.B. Unless isNew is set, this function updates the DB immediately and
* N.B. Unless isNew is set or the item doesn't yet have an id,
* this function updates the DB immediately and
* reloads all cached items -- a save() is not required
*
* If isNew is true, a transaction is not started or committed, so it
* should only be run from an existing transaction within save()
* If isNew is true, a transaction is not started or committed, so if
* the item has an id it should only be run from an existing transaction
* within Scholar.Item.save()
*/
Scholar.Item.prototype.setPosition = function(newFolder, newPos, isNew){
var oldFolder = this.getField('parentFolderID');
var oldPos = this.getField('orderIndex');
if (this.getID()){
if (newFolder==oldFolder && newPos==oldPos){
return true;
@ -328,6 +333,15 @@ Scholar.Item.prototype.setPosition = function(newFolder, newPos, isNew){
Scholar.DB.beginTransaction();
}
if (!newFolder){
newFolder = 0;
}
// Do a foreign key check manually
else if (!parseInt(Scholar.DB.valueQuery('SELECT COUNT(*) FROM folders '
+ 'WHERE folderID=' + newFolder))){
throw('Attempt to add item to invalid folder');
}
// If no position provided, drop at end of folder
if (!newPos){
newPos = Scholar.DB.valueQuery('SELECT MAX(orderIndex)+1 FROM ' +
@ -369,7 +383,7 @@ Scholar.Item.prototype.setPosition = function(newFolder, newPos, isNew){
this._data['parentFolderID'] = newFolder;
this._data['orderIndex'] = newPos;
if (!isNew){
if (this.getID() && !isNew){
Scholar.Items.reloadAll();
}
return true;
@ -642,10 +656,10 @@ Scholar.Item.prototype.save = function(){
// Set the position of the new item
var newFolder = this._changed.has('parentFolderID')
var newFolder = this.getField('parentFolderID')
? this.getField('parentFolderID') : 0;
var newPos = this._changed.has('orderIndex')
var newPos = this.getField('orderIndex')
? this.getField('orderIndex') : false;
this.setPosition(newFolder, newPos, true);
@ -760,6 +774,7 @@ Scholar.Items = new function(){
this.getTreeRows = getTreeRows;
this.reload = reload;
this.reloadAll = reloadAll;
this.getNewItemByType = getNewItemByType;
/*
* Retrieves (and loads, if necessary) an arbitrary number of items
@ -903,6 +918,11 @@ Scholar.Items = new function(){
}
function getNewItemByType(itemTypeID, parentFolderID, orderIndex){
return new Scholar.Item(itemTypeID, parentFolderID, orderIndex);
}
function add(data, itemTypeID, folderID, orderIndex){
var insert = new Array();