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[#88,refactor][s]: create recline.Model.Dataset.restore function and move dataset restore stuff there from recline.View.DataExplorer.restore.

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This commit is contained in:
Rufus Pollock 2012-04-15 23:08:42 +01:00
parent 3092ef6a8b
commit bcffe67336
2 changed files with 35 additions and 14 deletions
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30
src/model.js
View File

@ -141,6 +141,36 @@ my.Dataset = Backbone.Model.extend({
}
});
// ### Dataset.restore
//
// Restore a Dataset instance from a serialized state. Serialized state for a
// Dataset is an Object like:
//
// <pre>
// {
// backend: {backend type - i.e. value of dataset.backend.__type__}
// dataset: {result of dataset.toJSON()}
// ...
// }
my.Dataset.restore = function(state) {
// hack-y - restoring a memory dataset does not mean much ...
var dataset = null;
if (state.backend === 'memory') {
dataset = recline.Backend.createDataset(
[{stub: 'this is a stub dataset because we do not restore memory datasets'}],
[],
state.dataset
);
} else {
dataset = new recline.Model.Dataset(
state.dataset,
state.backend
);
}
return dataset;
};
// ## <a id="document">A Document (aka Row)</a>
//
// A single entry or row in the dataset

19
src/view.js
View File

@ -140,6 +140,10 @@ this.recline.View = this.recline.View || {};
// readOnly: (default: false) run in read-only mode
// }
// </pre>
//
// Note that at present we do *not* serialize information about the actual set
// of views in use -- e.g. those specified by the views argument. Instead we
// expect the client to have initialized the DataExplorer with the relevant views.
my.DataExplorer = Backbone.View.extend({
template: ' \
<div class="recline-data-explorer"> \
@ -362,20 +366,7 @@ my.DataExplorer = Backbone.View.extend({
//
// Restore a DataExplorer instance from a serialized state including the associated dataset
my.DataExplorer.restore = function(state) {
// hack-y - restoring a memory dataset does not mean much ...
var dataset = null;
if (state.backend === 'memory') {
dataset = recline.Backend.createDataset(
[{stub: 'this is a stub dataset because we do not restore memory datasets'}],
[],
state.dataset
);
} else {
dataset = new recline.Model.Dataset(
state.dataset,
state.backend
);
}
var dataset = recline.Model.Dataset.restore(state);
var explorer = new my.DataExplorer({
model: dataset,
state: state