Many classes have shortcut names used when creating (instantiating) a class with a
configuration object. The shortcut name is referred to as an alias (or xtype if the
class extends Ext.Component). The alias/xtype is listed next to the class name of
applicable classes for quick reference.
Framework classes or their members may be specified as private or protected. Else,
the class / member is public. Public, protected, and private are access
descriptors used to convey how and when the class or class member should be used.
Public classes and class members are available for use by any other class or application code and may be relied upon as a stable and persistent within major product versions. Public classes and members may safely be extended via a subclass.
Protected class members are stable public members intended to be used by the
owning class or its subclasses. Protected members may safely be extended via a subclass.
Private classes and class members are used internally by the framework and are not intended to be used by application developers. Private classes and members may change or be omitted from the framework at any time without notice and should not be relied upon in application logic.
static label next to the
method name. *See Static below.Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).
Let's look at each part of the member row:
lookupComponent in this example)( item ) in this example)Ext.Component in this case). This may be omitted for methods that do not
return anything other than undefined or may display as multiple possible values
separated by a forward slash / signifying that what is returned may depend on the
results of the method call (i.e. a method may return a Component if a get method calls is
successful or false if unsuccessful which would be displayed as
Ext.Component/Boolean).PROTECTED in
this example - see the Flags section below)Ext.container.Container in this example). The source
class will be displayed as a blue link if the member originates from the current class
and gray if it is inherited from an ancestor or mixed-in class.view source in the example)item : Object in the example).undefined a "Returns" section
will note the type of class or object returned and a description (Ext.Component in the
example)Available since 3.4.0 - not pictured in
the example) just after the member descriptionDefaults to: false)The API documentation uses a number of flags to further commnicate the class member's function and intent. The label may be represented by a text label, an abbreviation, or an icon.
classInstance.method1().method2().etc();false is returned from
an event handler- Indicates a framework class
- A singleton framework class. *See the singleton flag for more information
- A component-type framework class (any class within the Ext JS framework that extends Ext.Component)
- Indicates that the class, member, or guide is new in the currently viewed version
- Indicates a class member of type config
- Indicates a class member of type property
- Indicates a class member of type
method
- Indicates a class member of type event
- Indicates a class member of type
theme variable
- Indicates a class member of type
theme mixin
- Indicates that the class, member, or guide is new in the currently viewed version
Just below the class name on an API doc page is a row of buttons corresponding to the types of members owned by the current class. Each button shows a count of members by type (this count is updated as filters are applied). Clicking the button will navigate you to that member section. Hovering over the member-type button will reveal a popup menu of all members of that type for quick navigation.
Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with. The getter and setter method documentation will be found in the config row for easy reference.
Your page history is kept in localstorage and displayed (using the available real estate) just below the top title bar. By default, the only search results shown are the pages matching the product / version you're currently viewing. You can expand what is displayed by clicking on the button on the right-hand side of the history bar and choosing the "All" radio option. This will show all recent pages in the history bar for all products / versions.
Within the history config menu you will also see a listing of your recent page visits. The results are filtered by the "Current Product / Version" and "All" radio options. Clicking on the button will clear the history bar as well as the history kept in local storage.
If "All" is selected in the history config menu the checkbox option for "Show product details in the history bar" will be enabled. When checked, the product/version for each historic page will show alongside the page name in the history bar. Hovering the cursor over the page names in the history bar will also show the product/version as a tooltip.
Both API docs and guides can be searched for using the search field at the top of the page.
On API doc pages there is also a filter input field that filters the member rows
using the filter string. In addition to filtering by string you can filter the class
members by access level and inheritance. This is done using the checkboxes at the top of
the page. Note that filtering out private members also filters the API class
navigation tree.
Clicking on an empty search field will show your last 10 searches for quick navigation.
Each API doc page (with the exception of Javascript primitives pages) has a menu view of metadata relating to that class. This metadata view will have one or more of the following:
Ext.button.Button class has an alternate class name of Ext.Button). Alternate class
names are commonly maintained for backward compatibility.Runnable examples (Fiddles) are expanded on a page by default. You can collapse and expand example code blocks individually using the arrow on the top-left of the code block. You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. The toggle-all state will be remembered between page loads.
Class members are collapsed on a page by default. You can expand and collapse members using the arrow icon on the left of the member row or globally using the expand / collapse all toggle button top-right.
Viewing the docs on narrower screens or browsers will result in a view optimized for a smaller form factor. The primary differences between the desktop and "mobile" view are:
The class source can be viewed by clicking on the class name at the top of an API doc page. The source for class members can be viewed by clicking on the "view source" link on the right-hand side of the member row.
SecureSql is the javascript interface to Sencha Web Application Client's encrypted SQL database. SecureSql uses an encrypted form of SQLite 3. Please see http://sqlite.org/ for more details on the subset of SQL that sqlite supports.
Open a connection to the database. An application can have as many named databases as needed. Each database is independent of the other databases in the application.
var db = Ext.space.SecureSql.get("test");
Next you will need to define a schema in the database. Each version of the database should have a version number. When the database is ready to create tables and indexes, the callback function will be called with a Ext.space.securesql.Transaction. Add queries to create the tables and indexes needed for this database.
db.createSechema(1, function(tx){
tx.query("CREATE TABLE IF NOT EXISTS test (id int, name text, PRIMARY KEY (id))");
tx.query("CREATE TABLE IF NOT EXISTS person (id int, firstName text,lastName text, email text, PRIMARY KEY (id))");
});
Do not run the transaction from within the callback. It will be executed automatically after the callback function returns.
The callback on createSchema is only called if a database of that version does not already exist. If the schema of the application's database changes overtime then the data will need to be migrated. See the Migration section below.
See Ext.space.securesql.Database.createSchema for more details.
SecureSql provides two convenience methods for inserting data into the database. The application can pass either an array of data or a javascript object.
Ext.space.securesql.Database.insert will insert record into a table using a single
transaction.
Ext.space.securesql.Database.insertMany will insert multiple records into a table
single transaction.
Ext.space.securesql.Database.query will execute a query against the database in a
single transaction.
SecureSql supports executing multiple inserts and queries in a single logical transaction
var tx = Ext.space.securesql.Database.createTransaction()
tx.query()
tx.insert()
tx.query()
tx.query()
tx.execute()
see Ext.space.securesql.Database.createTransaction
SecureSql provides methods to migrate a schema from one version to the next. Data migrations can become complex so we recommend modification the database as little as possible after the initial creation.
If the application loads and createSechema attempts to create version 3 of the schema
db.createSchema(3, function(tx){
//....
});
1) if this client does not have a database then createSchema executes and the schema version is set to 3 2) if the client already has schema version 3 then nothing happens, and queries will be executed. 3) if the schema version is less that 3 then each of the registered migration callbacks are executed until the version is equal to the version defined in createSchema
It is the responsibility of the developer to ensure that the table mutation operations in the migration callbacks will correctly update the database to the current schema.
IF the developer has defined version 3 of createSchema then they should define two version migrations.
This migration will upgrade version 1 of the database to version 2.
db.migrate(2, function(tx){
//....
});
This migration will upgrade version 2 to version 3:
db.migrate(3, function(tx){
//....
});
If you need to programmatically determine what databases are available, call the listDatabases API:
Ext.space.SecureSql.listDatabases().then(function(databaseList) {
databaseList.forEach(function(db) {
// db.name, db.version, etc...
});
});
Opens the database with the given name; if it does not exist, it will be created.
options : Object< / a>
Database options
name : String
Database name
displayName : String (optional)
Database name for display purposes
The promise that will resolve when the database is opened and returned.
Permanently delete this database. This operation cannot be undone. All data in this database will be lost.
name : String
The name of the database to delete.
a promise that will resolve when the database has been removed.
Open a connection to a database. A database will automatically be created if it does not already exist.
name : String
The name of the database to open.
the secure collection.
List the available databases.
Promise which receives an array of database info objects like {name, displayName}
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