/
dash.dev.js
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dash.dev.js
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/* Documentation -> http://dashdb.com
* Repo -> http://github.com/editor/dash
* License -> MIT
* Author -> Taylor Buley (@taylorbuley)
* Copyright -> (c) 2011-2014 Buley LLC
*/
var dash = (function (environment) {
'use strict';
var API = {
dbs: {},
database: {},
databases: {},
store: {},
stores: {},
index: {},
indexes: {},
range: {},
entry: {},
entries: {},
behavior: {},
attribute: {},
transaction: {},
db: environment.indexedDB || indexedDB,
kr: environment.IDBKeyRange || IDBKeyRange,
sl: environment.DOMStringList || (self ? Array : DOMStringList)
},
Public;
/* Begin Utils */
/* This method copies an object by value (deeply) */
//warning: recursive
API.clone = function (obj) {
var clone = {};
if (API.isNumber(obj)) {
return parseInt(obj, 10);
}
if (API.isArray(obj)) {
return obj.slice(0);
}
API.safeIterate(obj, function (x, val) {
if (API.isObject(val) && !API.isFunction(val) && !API.isArray(val)) {
clone[x] = API.clone(val);
} else {
clone[x] = val;
}
});
return clone;
};
/* This method checks whether a variable has a value */
API.isEmpty = function (mixed_var) {
return (API.isnt(mixed_var, undefined) && API.isnt(mixed_var, null) && API.isnt(mixed_var, "") && (!API.isArray(mixed_var) || mixed_var.length > 0)) ? false : true;
};
/* This method returns the inverse of API.isEmpty(mixed_var) */
API.exists = function (mixed_var) {
return (API.isEmpty(mixed_var)) ? false : true;
};
/* This method tdetermins whether a given `haystack` contains a `needle` */
API.contains = function (haystack, needle, use_key) {
var result = false;
if (API.exists(haystack)) {
API.safeIterate(haystack, function (key, value) {
if ((API.is(use_key, true) && API.is(key, needle)) || API.is(value, needle)) {
result = true;
}
});
}
return result;
};
/* These are various utilitty methods used in type checls
* and other assertions.
*/
API.is = function (a, b) {
return b === a;
};
API.isnt = function (a, b) {
return b !== a;
};
API.isObject = function (mixed_var) {
return API.isnt(mixed_var, null) && API.isType("object", mixed_var) && API.is("[object Object]", mixed_var.toString());
};
API.isString = function (mixed_var) {
return API.isType("string", mixed_var);
};
API.isFunction = function (mixed_var) {
return API.isType("function", mixed_var);
};
API.standardCallbackNames = ['on_success', 'on_error', 'on_abort', 'on_blocked', 'on_upgrade_needed', 'on_close', 'on_complete'];
API.attribs = [
'amount',
'auto_increment',
'callback',
'data',
'database',
'databases',
'db',
'direction',
'duplicates',
'entries',
'entry',
'idx',
'index',
'index_key_path',
'index_multi_entry',
'index_unique',
'indexes',
'key',
'key_path',
'last_entry',
'last_key',
'last_primary_key',
'limit',
'match',
'map',
'multi_entry',
'new_version',
'objectstore',
'old_version',
'primary_key',
'skip',
'store',
'store_key_path',
'stores',
'total',
'throttle',
'type',
'unique',
'value',
'version'
];
API.attribs.push.apply(API.attribs, API.standardCallbackNames);
API.results = function (results_ctx) {
var obj = {},
toArray = function (list) {
var copied = [];
API.safeEach(list, function (el) {
copied.push(el);
});
return copied;
};
API.safeEach(API.attribs, function (k) {
if (API.exists(results_ctx[k])) {
if (API.is(k, 'db')) {
obj[k] = {
name: results_ctx[k].name,
version: results_ctx[k].version,
objectStoreNames: toArray(results_ctx[k].objectStoreNames)
};
} else if (API.is(k, 'objectstore')) {
obj[k] = {
name: results_ctx[k].name,
indexNames: toArray(results_ctx[k].indexNames),
autoIncrement: results_ctx[k].autoIncrement,
keyPath: results_ctx[k].keyPath
};
} else if (API.is(k, 'idx')) {
obj[k] = {
name: results_ctx[k].name,
multiEntry: results_ctx[k].multiEntry,
unique: results_ctx[k].unique,
keyPath: results_ctx[k].keyPath
};
} else if (API.is(k, 'indexes') || API.is(k, 'stores') || API.is(k, 'databases')) {
obj[k] = toArray(results_ctx[k]);
} else {
obj[k] = results_ctx[k];
}
}
});
return obj;
};
API.args = function (args_ctx) {
var obj = {};
API.safeEach(API.attribs, function (k) {
if (API.exists(args_ctx[k])) {
obj[k] = args_ctx[k];
}
});
return obj;
};
//arraylike works (e.g. DOMStringList)
API.isArray = function (mixed_var) {
var result = false;
if (mixed_var instanceof Array || mixed_var instanceof API.sl) {
result = true;
}
return result;
};
API.isNumber = function (mixed_var) {
return (API.isType("number", mixed_var) || API.is(isNaN(parseInt(mixed_var, 10), false))) ? true : false;
};
API.isBoolean = function (mixed_var) {
return (API.isType("boolean", mixed_var) || API.is(mixed_var, 'true') || API.is(mixed_var, 'false')) ? true : false;
};
API.isType = function (str, mixed_var) {
return API.is(str, typeof mixed_var);
};
/* This method clones `from` and applies it's values to `to`.
* When optional `deep` is true, it does this recursively on objects.
*/
API.extend = function (to, from, deep) {
to = to || {};
API.safeIterate(API.clone(from), function (key, value) {
if (API.is(true, deep) && API.isObject(value)) {
to[key] = API.extend({}, value, deep);
} else {
to[key] = value;
}
});
return to;
};
/* This method safely iterates through an object */
API.safeIterate = function (item, callback) {
var attr;
for (attr in item) {
if (item.hasOwnProperty(attr)) {
callback(attr, item[attr]);
}
}
};
/* This method safely iterates through an array */
API.safeEach = function (items, callback, inc) {
var x,
count = items.length;
inc = inc || 1;
for (x = 0; x < count; x += inc) {
API.safeApply(callback, [items[x], x]);
}
};
/* This method maybe applys a `fn` */
//warning: recursive
API.safeApply = function (fn, args, context, err) {
if (API.isFunction(fn)) {
return fn.apply(context || API, args || []);
}
if (API.isFunction(err)) {
return API.safeApply(err, []);
}
};
/* End Utils */
/* Begin API */
/*
* Helpers
*/
/* Metaprogramming API.callback shortcuts */
API.safeEach(API.standardCallbackNames, function (cb) {
API[cb.replace(/^on_/g, '')] = function (context) {
API.safeApply(context[cb], [context]);
return context;
};
});
API.standardCursor = function (cursor_ctx, getRequest) {
var decorate = function (event) {
cursor_ctx.event = event;
return cursor_ctx;
},
request,
count = 0,
limit = cursor_ctx.limit,
skip = cursor_ctx.skip,
skips = 0,
finish = function (e) {
cursor_ctx.cursor = request.result;
cursor_ctx = decorate(e);
cursor_ctx.last_key = cursor_ctx.key;
delete cursor_ctx.key;
cursor_ctx.last_primary_key = cursor_ctx.primary_key;
delete cursor_ctx.primary_key;
cursor_ctx.last_entry = cursor_ctx.entry;
delete cursor_ctx.entry;
delete cursor_ctx.direction;
cursor_ctx.db.close();
API.complete(cursor_ctx);
};
cursor_ctx.direction = cursor_ctx.direction || API.entries.next();
cursor_ctx.range = cursor_ctx.range || API.range.get(cursor_ctx);
if (API.exists(cursor_ctx.data)) {
cursor_ctx.data = API.isFunction(cursor_ctx.data) ? cursor_ctx.data() : API.clone(cursor_ctx.data);
}
if (API.isEmpty(cursor_ctx.transaction)) {
cursor_ctx.db = cursor_ctx.event.target.result;
cursor_ctx.transaction = cursor_ctx.db.transaction([cursor_ctx.store], cursor_ctx.type);
}
if (API.isEmpty(cursor_ctx.objectstore)) {
cursor_ctx.objectstore = cursor_ctx.transaction.objectStore(cursor_ctx.store);
}
if (API.isEmpty(cursor_ctx.idx) && !API.isEmpty(cursor_ctx.index)) {
cursor_ctx.idx = cursor_ctx.objectstore.index(cursor_ctx.index);
}
if (!API.isEmpty(cursor_ctx.index)) {
request = cursor_ctx.idx.openCursor(cursor_ctx.range, cursor_ctx.direction);
} else {
request = cursor_ctx.objectstore.openCursor(cursor_ctx.range, cursor_ctx.direction);
}
cursor_ctx.amount = cursor_ctx.amount || 0;
request.transaction.addEventListener('complete', function (e) {
finish(e);
});
request.transaction.addEventListener('error', function (e) {
cursor_ctx.error = e;
cursor_ctx = decorate(e);
API.error(cursor_ctx);
});
request.addEventListener('success', function (e) {
cursor_ctx.cursor = request.result;
if (API.exists(cursor_ctx.cursor)) {
cursor_ctx.primary_key = cursor_ctx.cursor.primaryKey;
cursor_ctx.key = cursor_ctx.cursor.key;
cursor_ctx.direction = cursor_ctx.cursor.direction;
}
cursor_ctx = decorate(e);
if (!API.isEmpty(skip)) {
if (API.exists(cursor_ctx.cursor.advance)) {
cursor_ctx.cursor.advance(skip);
}
skip = null;
} else {
if (API.isEmpty(limit) || count++ < limit) {
API.safeApply(getRequest, [cursor_ctx]);
}
}
});
};
/*
* Transactions
* Namespaces:
* API.transaction
* Methods:
* API.transaction.read
* API.transaction.readWrite
*/
/* Transaction types */
API.transaction.read = "readonly";
API.transaction.readWrite = "readwrite";
API.transaction.versionChange = "versionchange";
/*
* Database
* Namespaces:
* API.database
* Methods:
* API.database.remove
* API.database.close
* API.database.get
*/
/* Close a single db named `database`, aborting any transactions. */
/* IDB returns a void on deletes which makes these essentially
* syncronous calls. We support both techniques through the silent param */
API.database.close = function (close_ctx, silent) {
close_ctx.db.close();
if (API.isnt(silent, true)) {
API.success(close_ctx);
}
};
/* This method deletes a `database`. */
/* As with `database.close`, a no-callback ("silent") syncronous approach
* is supported with an optional true value for the `silent` param */
API.database.remove = function (remove_context, silent) {
API.db.deleteDatabase(remove_context.database);
if (API.isnt(silent, true)) {
API.success(remove_context);
}
};
/* This method loads a database given a database name and version.
* The database can be retrived on successful callback via the `db`
* attribute on the context object */
// TODO: Localize open_ctx.request and provide any results from within this method
API.database.get = function (open_ctx) {
var their_upgrade = open_ctx.on_upgrade_needed,
their_success = open_ctx.on_success,
their_on_blocked = open_ctx.on_blocked,
was_upgrade = false,
decorate = function (event, context) {
context.event = event;
context.transaction = context.request ? context.request.transaction : event.target.transaction;
if (API.exists(context.transaction) && API.exists(context.transaction.db)) {
context.db = context.transaction.db;
}
if (API.exists(event.newVersion)) {
context.new_version = event.newVersion;
context.old_version = event.oldVersion;
if (API.isnt(context.old_version, context.new_version)) {
context.upgrade = true;
} else {
context.upgrade = false;
}
} else {
context.upgrade = false;
}
return context;
};
open_ctx.request = API.isNumber(open_ctx.version) ? API.db.open(open_ctx.database, open_ctx.version) : API.db.open(open_ctx.database);
if (open_ctx.db) {
open_ctx.db.close();
}
open_ctx.request.addEventListener('success', function (event) {
if (was_upgrade) {
return;
}
open_ctx = decorate(event, open_ctx);
open_ctx.upgrade = false;
open_ctx.opened = true;
open_ctx.on_success = their_success;
open_ctx.db = open_ctx.event.target.result;
API.success(open_ctx);
});
open_ctx.request.addEventListener('upgradeneeded', function (event) {
was_upgrade = true;
open_ctx = decorate(event, open_ctx);
open_ctx.upgrade = true;
open_ctx.opened = true;
open_ctx.on_upgrade_needed = their_upgrade;
API.upgrade_needed(open_ctx);
});
open_ctx.request.addEventListener('blocked', function (event) {
open_ctx = decorate(event, open_ctx);
API.safeApply(their_on_blocked, [open_ctx]);
});
};
/* Returns all stores syncronously, or asyncronously through
* an on_success callback, given a database. */
API.databases.get = function (get_ctx) {
var theirs = get_ctx.on_success;
if (!API.isFunction(API.db.webkitGetDatabaseNames)) {
return API.error(get_ctx);
}
get_ctx.request = API.db.webkitGetDatabaseNames();
get_ctx.request.addEventListener('success', function (event) {
get_ctx.databases = event.target.result;
get_ctx.on_success = theirs;
API.success(get_ctx);
});
};
/*
* Stores
* Namespaces
* API.store
* API.stores
* Methods:
* API.store.delete
* API.store.get
* API.stores.get
*/
/* This method clears a `database` object `store` of any objects. */
API.store.clear = function (clear_ctx) {
clear_ctx.objectstore.clear();
API.success(clear_ctx);
};
/* This method delete a `database` object `store` */
API.store.remove = function (remove_context) {
remove_context.db.deleteObjectStore(remove_context.store);
API.success(remove_context);
};
/* Returns a single store syncronously, or asyncronously through
* an on_success callback, given a database and store. */
API.store.get = function (get_ctx) {
API.success(get_ctx);
};
/* Returns all stores syncronously, or asyncronously through
* an on_success callback, given a database. */
API.stores.get = function (get_ctx) {
get_ctx.stores = get_ctx.db.objectStoreNames;
API.success(get_ctx);
};
/*
* Indexes
* Namespaces
* API.index
* API.indexes
* Methods:
* API.index.exists
* API.index.get
* API.index.delete
* API.indexes.get
* API.indexes.create
*/
/* Returns a single index syncronously, or asyncronously through
* an on_complete callback, given a database, store and index. */
API.index.get = function (get_ctx) {
get_ctx.idx = get_ctx.objectstore.index(get_ctx.index);
API.success(get_ctx);
};
/* This method deletes an index with a given `name` on a given
* `database` and `store`. It creates an implicit database version upgrade.
*/
API.index.remove = function (remove_ctx) {
remove_ctx.objectstore.deleteIndex(remove_ctx.index);
API.success(remove_ctx);
};
/* Returns all indexes syncronously, or asyncronously through
* an on_success callback, given a database and store. */
API.indexes.get = function (get_ctx) {
get_ctx.indexes = get_ctx.objectstore.indexNames;
API.success(get_ctx);
};
/*
* Entries
*
* Namespaces:
* API.entry
* API.entries
*
* Methods:
* API.entry.add
* API.entry[ 'delete' ]
* API.entry.get
* API.entry.put
* API.entryResult
*
*/
/* This method adds a `data` object to an object `store` `database`. */
API.entry.add = function (add_ctx) {
var request;
add_ctx.data = API.isFunction(add_ctx.data) ? add_ctx.data() : API.clone(add_ctx.data);
request = add_ctx.objectstore.add(add_ctx.data);
add_ctx.transaction.addEventListener('error', function (event) {
add_ctx.error = event.target.error.message;
API.error(add_ctx);
});
request.addEventListener('success', function () {
add_ctx.key = request.result;
API.success(add_ctx);
});
};
/* This method deletes a `database`'s object `store` row given a `key` */
API.entry.remove = function (remove_ctx) {
var request,
has_range = API.exists(remove_ctx.range) || API.exists(remove_ctx.upper) || API.exists(remove_ctx.lower) || API.exists(remove_ctx.only);
request = remove_ctx.objectstore["delete"](has_range ? (remove_ctx.range || API.range.get(remove_ctx)) : remove_ctx.key);
remove_ctx.transaction.addEventListener('complete', function () {
remove_ctx.entry = request.result;
API.success(remove_ctx);
});
remove_ctx.transaction.addEventListener('error', function (event) {
remove_ctx.error = event.target.error.message;
API.error(remove_ctx);
});
};
/* This method gets a row from an object store named `store` in a database
* named `database` using an optional `index` and `key`
*/
API.entry.get = function (get_ctx) {
var request;
if (API.exists(get_ctx.index)) {
get_ctx.idx = get_ctx.objectstore.index(get_ctx.index);
request = API.is(get_ctx.value, false) ? get_ctx.idx.getKey(get_ctx.key) : get_ctx.idx.get(get_ctx.key);
} else {
request = get_ctx.objectstore.get(get_ctx.key);
}
get_ctx.transaction.addEventListener('error', function (event) {
get_ctx.error = event.target.error.message;
API.error(get_ctx);
});
request.addEventListener('success', function () {
get_ctx.entry = request.result;
API.success(get_ctx);
});
};
/* This method puts a `data` object to a `database` object `store` using a `key`.
* This change is made without regard to its previous state. */
API.entry.put = function (put_ctx) {
var request;
put_ctx.data = API.isFunction(put_ctx.data) ? put_ctx.data() : API.clone(put_ctx.data);
request = API.exists(put_ctx.key) ? put_ctx.objectstore.put(put_ctx.data, put_ctx.key) : put_ctx.objectstore.put(put_ctx.data);
put_ctx.transaction.addEventListener('complete', function () {
put_ctx.key = request.result;
API.success(put_ctx);
});
put_ctx.transaction.addEventListener('error', function (event) {
put_ctx.error = event.target.error.message;
API.error(put_ctx);
});
};
/* This method deletes rows from a `database` `store` matching the
* `index` cursor with the given `key_range`
*/
API.entries.remove = function (remove_ctx) {
remove_ctx.type = API.transaction.readWrite;
var their_on_success = remove_ctx.on_success;
API.standardCursor(remove_ctx, function (passed_remove_ctx) {
passed_remove_ctx.entry = passed_remove_ctx.request;
if (API.exists(passed_remove_ctx.cursor)) {
passed_remove_ctx.on_success = their_on_success;
passed_remove_ctx.entry = passed_remove_ctx.cursor.value;
passed_remove_ctx.amount = passed_remove_ctx.amount || 0;
passed_remove_ctx.amount += 1;
passed_remove_ctx.cursor['delete']();
API.success(passed_remove_ctx);
if (API.exists(passed_remove_ctx.cursor['continue'])) {
passed_remove_ctx.cursor['continue']();
}
}
});
};
/* This method gets rows from a `database` object `store` using a cursor creating
* with an `index`, `key_range` and optional `direction`. */
API.entries.get = function (get_ctx) {
get_ctx.type = API.transaction.read;
var their_on_success = get_ctx.on_success;
get_ctx.on_success = null;
API.standardCursor(get_ctx, function (passed_get_ctx) {
if (API.exists(passed_get_ctx.cursor)) {
passed_get_ctx.on_success = their_on_success;
passed_get_ctx.entry = passed_get_ctx.cursor.value;
passed_get_ctx.amount = passed_get_ctx.amount || 0;
passed_get_ctx.amount += 1;
API.success(passed_get_ctx);
if (API.exists(passed_get_ctx.cursor['continue'])) {
passed_get_ctx.cursor['continue']();
}
}
});
};
/* This method returns the number of records associated with
an index request */
API.entries.count = function (count_ctx) {
var request;
if (API.exists(count_ctx.index)) {
count_ctx.idx = count_ctx.objectstore.index(count_ctx.index);
request = API.isEmpty(count_ctx.key) ? count_ctx.idx.count() : count_ctx.idx.count(count_ctx.key);
} else {
request = API.isEmpty(count_ctx.key) ? count_ctx.objectstore.count() : count_ctx.objectstore.count(count_ctx.key);
}
count_ctx.transaction.addEventListener('error', function (event) {
count_ctx.error = event.target.error.message;
API.error(count_ctx);
});
request.addEventListener('success', function () {
count_ctx.total = request.result;
API.success(count_ctx);
});
};
/* This method updates rows in a `database` `store` matching the
* `index` cursor with the given `key_range`
*/
API.entries.update = function (update_ctx) {
update_ctx.type = API.transaction.readWrite;
var their_on_success = update_ctx.on_success;
API.standardCursor(update_ctx, function (passed_update_ctx) {
if (API.exists(passed_update_ctx.cursor)) {
passed_update_ctx.on_success = their_on_success;
passed_update_ctx.entry = passed_update_ctx.cursor.value;
passed_update_ctx.amount = passed_update_ctx.amount || 0;
passed_update_ctx.amount += 1;
passed_update_ctx.cursor.update(passed_update_ctx.data);
API.success(passed_update_ctx);
if (API.exists(passed_update_ctx.cursor['continue'])) {
passed_update_ctx.cursor['continue']();
}
}
});
};
/*
* Key Ranges
*/
/* This method returns an IDBKeyRange given a range type
* and returns false if type is not valid.
* Valid types include: bound, leftBound, only, rightBound */
/* This approach adds syntatic sugar by using duck typing
* to determine key type */
/* For more info on key types: https://developer.mozilla.org/en/indexeddb/idbkeyrange*/
API.range.get = function (get_ctx) {
var result = null,
left_bound = get_ctx.left_bound,
right_bound = get_ctx.right_bound,
includes_left_bound = get_ctx.includes_left_bound,
includes_right_bound = get_ctx.includes_right_bound;
if (API.exists(left_bound) && API.exists(right_bound) && API.exists(includes_left_bound) && API.exists(includes_right_bound)) {
result = API.kr.bound(left_bound, right_bound, includes_left_bound, includes_right_bound);
} else if (API.exists(left_bound) && API.exists(includes_left_bound)) {
result = API.kr.lowerBound(left_bound, includes_left_bound);
} else if (API.exists(right_bound) && API.exists(includes_right_bound)) {
result = API.kr.upperBound(right_bound, includes_right_bound);
} else if (API.exists(get_ctx.value)) {
result = API.kr.only(get_ctx.value);
}
get_ctx.result = result;
API.success(get_ctx);
return result;
};
/**
* Directions
*
**/
/* Direction types */
API.entries.next = function (cursor_ctx) {
return API.exists(cursor_ctx) && API.is(false, cursor_ctx.duplicates) ? 'nextunique' : 'next';
};
API.entries.previous = function (cursor_ctx) {
return API.exists(cursor_ctx) && API.is(false, cursor_ctx.duplicates) ? 'prevunique' : 'prev';
};
API.deferred = function () {
var complete = false,
wasSuccess = null,
completed = [],
children = [],
notifies = [],
successes = [],
errors = [];
return {
'promise': function (on_success, on_error, on_notify) {
var deferred = API.deferred();
children.push(deferred);
if (API.is(complete, true)) {
API.safeApply(wasSuccess ? on_success : on_error, completed);
} else {
API.safeEach([
[successes, on_success],
[errors, on_error],
[notifies, on_notify]
], function (pair) {
var fn = pair[1];
if (API.isFunction(fn)) {
pair[0].push(fn);
}
});
}
return deferred.promise;
},
'resolve': function () {
var args = arguments;
if (API.is(complete, false)) {
wasSuccess = true;
complete = true;
completed = args;
API.safeEach(successes, function (on_success) {
API.safeApply(on_success, args);
});
API.safeEach(children, function (child) {
API.safeApply(child.resolve, args);
});
}
},
'notify': function () {
var args = arguments;
API.safeEach(notifies, function (on_notify) {
API.safeApply(on_notify, args);
});
API.safeEach(children, function (child) {
API.safeApply(child.notify, args);
});
},
'reject': function () {
var args = arguments;
if (API.is(complete, false)) {
wasSuccess = false;
complete = true;
completed = args;
API.safeEach(errors, function (on_error) {
API.safeApply(on_error, args);
});
}
}
};
};
API.transaction.queues = [];
API.transaction.type = function (method) {
if (API.contains(['add.index', 'remove.index', 'add.store', 'remove.store'], method)) {
return API.transaction.versionChange;
}
if (API.contains(['get.entry', 'get.entries'], method)) {
return API.transaction.read;
}
return API.transaction.readWrite;
};
//TODO: Why isn't this yet refactored out
API.detached = [
'database',
'store',
'version',
'store_key_path',
'unique',
'multi_entry',
'data',
'auto_increment',
'on_complete',
'on_error',
'on_success',
'on_abort',
'key',
'index',
'index_key_path',
'index_multi_entry',
'index_unique',
'limit',
'skip'
];
API.detachContext = function (context) {
var detached = {};
API.safeEach(API.detached, function (detachable) {
if (API.exists(context[detachable])) {
detached[detachable] = context[detachable];
}
});
return detached;
};
API.stage = function (method, args, methodname) {
var determined_type = API.transaction.type(methodname),
checkQueue = function () {
var process_context = API.transaction.queues.shift(),
their_on_upgrade_needed = process_context ? process_context.on_upgrade_needed : undefined,
their_on_success = process_context ? process_context.on_success : undefined;
if (API.exists(process_context)) {
if (API.contains(['get.database', 'remove.database'], methodname)) {
return finishWrapAndRespond(process_context);
}
process_context.on_success = null;
process_context.on_upgrade_needed = null;
maybeAddDatabase(process_context, function (process_context_2) {
maybeAddObjectStore(process_context_2, function (process_context_3) {
maybeAddIndex(process_context_3, function (process_context_4) {
process_context_4.on_success = their_on_success;
process_context_4.on_upgrade_needed = their_on_upgrade_needed;
finishWrapAndRespond(process_context_4);
});
});
});
}
},
maybeAddDatabase = function (context, callback) {
var owncontext = API.detachContext(context);
if (API.isEmpty(context.database)) {
return API.safeApply(callback, [context]);
}
owncontext.on_success = function (db_ctx) {
db_ctx.on_success = null;
db_ctx.version = db_ctx.db.version;
db_ctx.db.close();
API.safeApply(callback, [db_ctx]);
};
owncontext.on_upgrade_needed = function (db_ctx) {
db_ctx.upgraded = true;
db_ctx.version = db_ctx.new_version;
db_ctx.on_upgrade_needed = null;
db_ctx.transaction.oncomplete = function () {
db_ctx.db.close();
API.safeApply(callback, [db_ctx]);
};
};
API.database.get(owncontext);
}, maybeAddObjectStore = function (context, callback) {
var owncontext = API.detachContext(context);
if (API.isEmpty(context.store) || API.contains(['add.store'], methodname)) {
return API.safeApply(callback, [context]);
}
owncontext.on_success = function (os_ctx) {
os_ctx.on_success = null;
os_ctx.db = os_ctx.request.result;
if (!os_ctx.db.objectStoreNames.contains(os_ctx.store)) {
os_ctx.version = os_ctx.db.version + 1;
os_ctx.on_success = null;
os_ctx.on_upgrade_needed = function (upg_os_ctx) {
upg_os_ctx.on_upgrade_needed = null;
upg_os_ctx.transaction.addEventListener('complete', function () {
upg_os_ctx.db.close();
API.safeApply(callback, [upg_os_ctx]);
});
upg_os_ctx.objectstore = upg_os_ctx.db.createObjectStore(upg_os_ctx.store, {
keyPath: API.isString(upg_os_ctx.store_key_path) ? upg_os_ctx.store_key_path : null,
autoIncrement: API.isBoolean(upg_os_ctx.auto_increment) ? upg_os_ctx.auto_increment : false
});
};
API.database.get(os_ctx);
} else {
if (API.isnt(os_ctx.transaction, null)) {
os_ctx.objectstore = os_ctx.transaction.objectStore([os_ctx.store], determined_type);
}
os_ctx.db.close();
API.safeApply(callback, [os_ctx]);
}
};
owncontext.version = null;
API.database.get(owncontext);
}, maybeAddIndex = function (context, callback) {
var owncontext = API.detachContext(context);
if (API.isEmpty(context.store) || API.isEmpty(context.index) || API.contains(['add.store', 'get.store', 'remove.store', 'get.stores', 'remove.stores', 'remove.index', 'add.index'], methodname)) {
return API.safeApply(callback, [context]);
}
owncontext.on_success = function (idx_ctx) {
idx_ctx.on_success = null;
idx_ctx.db = idx_ctx.request.result;
idx_ctx.objectstore = idx_ctx.db.transaction([idx_ctx.store], API.transaction.read).objectStore(idx_ctx.store);
idx_ctx.transaction = idx_ctx.objectstore.transaction;
if (!idx_ctx.objectstore.indexNames.contains(context.index)) {
idx_ctx.version = idx_ctx.db.version + 1;
idx_ctx.on_success = null;
idx_ctx.on_upgrade_needed = function (upg_idx_ctx) {
upg_idx_ctx.objectstore = upg_idx_ctx.transaction.objectStore([upg_idx_ctx.store]);
upg_idx_ctx.on_upgrade_needed = null;
upg_idx_ctx.transaction.addEventListener('complete', function () {
upg_idx_ctx.on_success = null;
API.safeApply(callback, [upg_idx_ctx]);
upg_idx_ctx.db.close();
});
upg_idx_ctx.on_success = null;
upg_idx_ctx.idx = upg_idx_ctx.objectstore.createIndex(upg_idx_ctx.index, upg_idx_ctx.index_key_path, {
'unique': upg_idx_ctx.index_unique || false,
'multiEntry': upg_idx_ctx.index_multi_entry || false
});
};
idx_ctx.db.close();
API.database.get(idx_ctx);
} else {
idx_ctx.db.close();
API.safeApply(callback, [idx_ctx]);
}
};
API.database.get(owncontext);
},
finishWrapAndRespond = function (context) {
var their_on_success = context.on_success,
their_on_complete = context.on_complete,
their_on_error = context.on_error,
owncontext = API.detachContext(context),
cb = function (cb_ctx) {
if (API.exists(cb_ctx.store) && API.isnt(determined_type, API.transaction.versionChange)) {
if (API.is(cb_ctx.transaction, null)) {
cb_ctx.transaction = cb_ctx.db.transaction([cb_ctx.store], determined_type);
}
cb_ctx.objectstore = cb_ctx.transaction.objectStore(cb_ctx.store);
cb_ctx.transaction.addEventListener('complete', function () {
cb_ctx.db.close();
checkQueue();
});
} else if (API.exists(cb_ctx.store)) {