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Adds useful methods to Opera's Windows and Tabs API for extensions
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README.md

Windows and Tabs API Extensions

This library adds useful methods to Opera's Windows and Tabs API for extensions. It adds a global TabUtils object and extends Opera's BrowserTab, BrowserTabGroup and BrowserWindow objects with new methods and properties.

Just add js/api-extensions.js to your project and include it in your extension's index.html with a <script> tag like so:

<script src="js/api-extensions.js"></script>

More in-depth documentation can be found in the jsdoc folder.

Bug-Fixes

  • Opera 12.00: BrowserTabManager.create() causes the addressbar to be focused when opening a tab in the background. The method is now rewritten to open tabs in the foreground, then immediately return focus to the original tab so that it opens in the background without switching keyboard focus to the address bar.

TabUtils

TabUtils.isTab(object)

Returns whether an object is a BrowserTab

TabUtils.isGroup(object)

Returns whether an object is a BrowserTabGroup

TabUtils.isWindow(object)

Returns whether an object is a BrowserWindow

TabUtils.isAccessible(tab)

Returns whether messages can be posted to a tab

TabUtils.firstTab(group)

Gets the leftmost tab within a tab group

TabUtils.lastTab(group)

Gets the rightmost tab within a tab group

TabUtils.nextSibling(item)

Gets the next tab or tab group within a tab or group's container.

TabUtils.nextTab(item)

Gets the tab immediately to the right of a tab or group

TabUtils.previousSibling(item)

Gets the previous tab or tab group within a tab or group's container.

TabUtils.previousTab(item)

Gets the tab immediately to the left of a tab or group

BrowserTab

Properties

nextSibling

If the tab is part of a group, gets the next tab in the group. Otherwise, gets the next tab or tab group in the window.

nextTab

Gets the tab immediately to the right of this tab.

previousSibling

If the tab is part of a group, gets the previous tab in the group. Otherwise, gets the next tab or tab group in the window.

previousTab

Gets the tab immediately to the left of this tab.

Methods

ungroup(before = false)

Removes the tab from its current tab group. If the tab is not part of a group, does nothing.

  • before (Boolean): Optional. If true, the tab will be placed to the left of its group. If false or omitted, the tab will be placed to the right.

BrowserTabGroup

Properties

firstTab

Gets the leftmost tab in the group

lastTab

Gets the rightmost tab in the group

nextSibling

Gets the next tab or group within the window

previousSibling

Gets the previous tab or group within the window

Methods

at(position)

Gets the tab at a given position in the group

insertAfter(tab, child)

Just like BrowserTabGroup.insert(tab, child), but inserts the tab to the right of the child tab instead of before it.

move(tab, to)

Moves a tab to a new position within the group. If the position does not exist, the tab will be placed at the end of the group.

move(from, to)

Moves the tab at position from to a new position within the group. If the position does not exist, the tab will be placed at the end of the group.

ungroup()

Dissolves the tab group

expand()

Shortcut for tabGroup.update({ collapsed: false })

collapse()

Shortcut for tabGroup.update({ collapsed: true })

BrowserWindow

Methods

at(position)

Gets the tab or group at a given position in the window

insertAfter(tab, child)

Just like BrowserWindow.insert(tab, child), but inserts the tab or group to the right of the child item instead of before it.

move(item, to)

Moves a tab or tab group to a new position within the window. If the position does not exist, the item will be placed at the end of the window.

move(from, to)

Moves the tab or group at position from to a new position within the window. If the position does not exist, the item will be placed at the end of the window.

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