State

Persist the state (scale, position, expanded/collapsed and min/max nodes) in the url or indexedDB

Default value: null

Options:

• name
• readFromLocalStorage
• writeToLocalStorage
• readFromIndexedDB
• writeToIndexedDB
• readFromUrlParams
• writeToUrlParams

Code example:

 
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let chart = new OrgChart(document.getElementById('tree'), {
    state: {
        name: 'StateForMyTree',
        readFromLocalStorage: true,
        writeToLocalStorage: true,
        readFromIndexedDB: true,
        writeToIndexedDB: true,
        readFromUrlParams: true,                    
        writeToUrlParams: true
    },
    nodes: [
        { id: 1 },
        { id: 2, pid: 1 } 
    ]
});
    

1. Local storage

Use name to save a state name

Code example:

 
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    state: {
        name: 'StateForMyTree',
        readFromLocalStorage: true,
        writeToLocalStorage: true,
    },
    

You can test the state here by collapsing some nodes, changing the position of the chart and refreshing the page (F5)
Limitation: most browsers has 5MB limit of the local storage.

Edit in BALKAN Code

2.IndexedDB

Usage is the same as Local storage.
Limitations: does not work in iframe.

Code example:

 
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    state: {
        name: 'StateForMyTree',
        readFromIndexedDB: true,
        writeToIndexedDB: true,
    },
    

3.URL

Use stateToUrl method to open the saved state in the browser:

Signature:

 
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chart.stateToUrl();
    

Edit in BALKAN Code

Priority

1. readFromUrlParams
2. readFromLocalStorage
3. readFromIndexedDB