1169 lines
31 KiB
Markdown
1169 lines
31 KiB
Markdown
# browser-window
|
||
|
||
The `BrowserWindow` class gives you ability to create a browser window, an
|
||
example is:
|
||
|
||
```javascript
|
||
var BrowserWindow = require('browser-window');
|
||
|
||
var win = new BrowserWindow({ width: 800, height: 600, show: false });
|
||
win.on('closed', function() {
|
||
win = null;
|
||
});
|
||
|
||
win.loadUrl('https://github.com');
|
||
win.show();
|
||
```
|
||
|
||
You can also create a window without chrome by using
|
||
[Frameless Window](frameless-window.md) API.
|
||
|
||
## Class: BrowserWindow
|
||
|
||
`BrowserWindow` is an
|
||
[EventEmitter](http://nodejs.org/api/events.html#events_class_events_eventemitter).
|
||
|
||
### new BrowserWindow(options)
|
||
|
||
* `options` Object
|
||
* `x` Integer - Window's left offset to screen
|
||
* `y` Integer - Window's top offset to screen
|
||
* `width` Integer - Window's width
|
||
* `height` Integer - Window's height
|
||
* `use-content-size` Boolean - The `width` and `height` would be used as web
|
||
page's size, which means the actual window's size will include window
|
||
frame's size and be slightly larger.
|
||
* `center` Boolean - Show window in the center of the screen
|
||
* `min-width` Integer - Minimum width
|
||
* `min-height` Integer - Minimum height
|
||
* `max-width` Integer - Maximum width
|
||
* `max-height` Integer - Maximum height
|
||
* `resizable` Boolean - Whether window is resizable
|
||
* `always-on-top` Boolean - Whether the window should always stay on top of
|
||
other windows
|
||
* `fullscreen` Boolean - Whether the window should show in fullscreen, when
|
||
set to `false` the fullscreen button would also be hidden on OS X
|
||
* `skip-taskbar` Boolean - Do not show window in taskbar
|
||
* `zoom-factor` Number - The default zoom factor of the page, zoom factor is
|
||
zoom percent / 100, so `3.0` represents `300%`
|
||
* `kiosk` Boolean - The kiosk mode
|
||
* `title` String - Default window title
|
||
* `icon` [NativeImage](native-image.md) - The window icon, when omitted on
|
||
Windows the executable's icon would be used as window icon
|
||
* `show` Boolean - Whether window should be shown when created
|
||
* `frame` Boolean - Specify `false` to create a
|
||
[Frameless Window](frameless-window.md)
|
||
* `node-integration` Boolean - Whether node integration is enabled, default
|
||
is `true`
|
||
* `accept-first-mouse` Boolean - Whether the web view accepts a single
|
||
mouse-down event that simultaneously activates the window
|
||
* `disable-auto-hide-cursor` Boolean - Do not hide cursor when typing
|
||
* `auto-hide-menu-bar` Boolean - Auto hide the menu bar unless the `Alt`
|
||
key is pressed.
|
||
* `enable-larger-than-screen` Boolean - Enable the window to be resized larger
|
||
than screen.
|
||
* `dark-theme` Boolean - Forces using dark theme for the window, only works on
|
||
some GTK+3 desktop environments
|
||
* `preload` String - Specifies a script that will be loaded before other
|
||
scripts run in the window. This script will always have access to node APIs
|
||
no matter whether node integration is turned on for the window, and the path
|
||
of `preload` script has to be absolute path.
|
||
* `transparent` Boolean - Makes the window [transparent](frameless-window.md)
|
||
* `type` String - Specifies the type of the window, possible types are
|
||
`desktop`, `dock`, `toolbar`, `splash`, `notification`. This only works on
|
||
Linux.
|
||
* `standard-window` Boolean - Uses the OS X's standard window instead of the
|
||
textured window. Defaults to `true`.
|
||
* `web-preferences` Object - Settings of web page's features
|
||
* `javascript` Boolean
|
||
* `web-security` Boolean
|
||
* `images` Boolean
|
||
* `java` Boolean
|
||
* `text-areas-are-resizable` Boolean
|
||
* `webgl` Boolean
|
||
* `webaudio` Boolean
|
||
* `plugins` Boolean - Whether plugins should be enabled, currently only
|
||
`NPAPI` plugins are supported.
|
||
* `extra-plugin-dirs` Array - Array of paths that would be searched for
|
||
plugins. Note that if you want to add a directory under your app, you
|
||
should use `__dirname` or `process.resourcesPath` to join the paths to
|
||
make them absolute, using relative paths would make Electron search
|
||
under current working directory.
|
||
* `experimental-features` Boolean
|
||
* `experimental-canvas-features` Boolean
|
||
* `subpixel-font-scaling` Boolean
|
||
* `overlay-scrollbars` Boolean
|
||
* `overlay-fullscreen-video` Boolean
|
||
* `shared-worker` Boolean
|
||
* `direct-write` Boolean - Whether the DirectWrite font rendering system on
|
||
Windows is enabled
|
||
* `page-visibility` Boolean - Page would be forced to be always in visible
|
||
or hidden state once set, instead of reflecting current window's
|
||
visibility. Users can set it to `true` to prevent throttling of DOM
|
||
timers.
|
||
|
||
Creates a new `BrowserWindow` with native properties set by the `options`.
|
||
Usually you only need to set the `width` and `height`, other properties will
|
||
have decent default values.
|
||
|
||
### Event: 'page-title-updated'
|
||
|
||
* `event` Event
|
||
|
||
Emitted when the document changed its title, calling `event.preventDefault()`
|
||
would prevent the native window's title to change.
|
||
|
||
### Event: 'close'
|
||
|
||
* `event` Event
|
||
|
||
Emitted when the window is going to be closed. It's emitted before the
|
||
`beforeunload` and `unload` event of DOM, calling `event.preventDefault()`
|
||
would cancel the close.
|
||
|
||
Usually you would want to use the `beforeunload` handler to decide whether the
|
||
window should be closed, which will also be called when the window is
|
||
reloaded. In Electron, returning an empty string or `false` would cancel the
|
||
close. An example is:
|
||
|
||
```javascript
|
||
window.onbeforeunload = function(e) {
|
||
console.log('I do not want to be closed');
|
||
|
||
// Unlike usual browsers, in which a string should be returned and the user is
|
||
// prompted to confirm the page unload, Electron gives developers more options.
|
||
// Returning empty string or false would prevent the unloading now.
|
||
// You can also use the dialog API to let the user confirm closing the application.
|
||
return false;
|
||
};
|
||
```
|
||
|
||
### Event: 'closed'
|
||
|
||
Emitted when the window is closed. After you have received this event you should
|
||
remove the reference to the window and avoid using it anymore.
|
||
|
||
### Event: 'unresponsive'
|
||
|
||
Emitted when the web page becomes unresponsive.
|
||
|
||
### Event: 'responsive'
|
||
|
||
Emitted when the unresponsive web page becomes responsive again.
|
||
|
||
### Event: 'blur'
|
||
|
||
Emitted when window loses focus.
|
||
|
||
### Event: 'focus'
|
||
|
||
Emitted when window gains focus.
|
||
|
||
### Event: 'maximize'
|
||
|
||
Emitted when window is maximized.
|
||
|
||
### Event: 'unmaximize'
|
||
|
||
Emitted when window exits from maximized state.
|
||
|
||
### Event: 'minimize'
|
||
|
||
Emitted when window is minimized.
|
||
|
||
### Event: 'restore'
|
||
|
||
Emitted when window is restored from minimized state.
|
||
|
||
### Event: 'resize'
|
||
|
||
Emitted when window is getting resized.
|
||
|
||
### Event: 'move'
|
||
|
||
Emitted when the window is getting moved to a new position.
|
||
|
||
__Note__: On OS X this event is just an alias of `moved`.
|
||
|
||
### Event: 'moved'
|
||
|
||
Emitted once when the window is moved to a new position.
|
||
|
||
__Note__: This event is available only on OS X.
|
||
|
||
### Event: 'enter-full-screen'
|
||
|
||
Emitted when window enters full screen state.
|
||
|
||
### Event: 'leave-full-screen'
|
||
|
||
Emitted when window leaves full screen state.
|
||
|
||
### Event: 'enter-html-full-screen'
|
||
|
||
Emitted when window enters full screen state triggered by html api.
|
||
|
||
### Event: 'leave-html-full-screen'
|
||
|
||
Emitted when window leaves full screen state triggered by html api.
|
||
|
||
### Event: 'devtools-opened'
|
||
|
||
Emitted when devtools is opened.
|
||
|
||
### Event: 'devtools-closed'
|
||
|
||
Emitted when devtools is closed.
|
||
|
||
### Event: 'devtools-focused'
|
||
|
||
Emitted when devtools is focused / opened.
|
||
|
||
### Event: 'app-command':
|
||
|
||
Emitted when an [App Command](https://msdn.microsoft.com/en-us/library/windows/desktop/ms646275(v=vs.85).aspx) is invoked. These are typically related to keyboard media keys or browser commands, as well as the "Back" button built into some mice on Windows.
|
||
|
||
```js
|
||
someWindow.on('app-command', function(e, cmd) {
|
||
// Navigate the window back when the user hits their mouse back button
|
||
if (cmd === 'browser-backward' && someWindow.webContents.canGoBack()) {
|
||
someWindow.webContents.goBack();
|
||
}
|
||
});
|
||
```
|
||
|
||
__Note__: This event is only fired on Windows.
|
||
|
||
### Class Method: BrowserWindow.getAllWindows()
|
||
|
||
Returns an array of all opened browser windows.
|
||
|
||
### Class Method: BrowserWindow.getFocusedWindow()
|
||
|
||
Returns the window that is focused in this application.
|
||
|
||
### Class Method: BrowserWindow.fromWebContents(webContents)
|
||
|
||
* `webContents` WebContents
|
||
|
||
Find a window according to the `webContents` it owns
|
||
|
||
### Class Method: BrowserWindow.fromId(id)
|
||
|
||
* `id` Integer
|
||
|
||
Find a window according to its ID.
|
||
|
||
### Class Method: BrowserWindow.addDevToolsExtension(path)
|
||
|
||
* `path` String
|
||
|
||
Adds devtools extension located at `path`, and returns extension's name.
|
||
|
||
The extension will be remembered so you only need to call this API once, this
|
||
API is not for programming use.
|
||
|
||
### Class Method: BrowserWindow.removeDevToolsExtension(name)
|
||
|
||
* `name` String
|
||
|
||
Remove the devtools extension whose name is `name`.
|
||
|
||
### BrowserWindow.webContents
|
||
|
||
The `WebContents` object this window owns, all web page related events and
|
||
operations would be done via it.
|
||
|
||
**Note:** Users should never store this object because it may become `null`
|
||
when the renderer process (web page) has crashed.
|
||
|
||
### BrowserWindow.devToolsWebContents
|
||
|
||
Get the `WebContents` of devtools of this window.
|
||
|
||
**Note:** Users should never store this object because it may become `null`
|
||
when the devtools has been closed.
|
||
|
||
### BrowserWindow.id
|
||
|
||
Get the unique ID of this window.
|
||
|
||
### BrowserWindow.destroy()
|
||
|
||
Force closing the window, the `unload` and `beforeunload` event won't be emitted
|
||
for the web page, and `close` event would also not be emitted
|
||
for this window, but it would guarantee the `closed` event to be emitted.
|
||
|
||
You should only use this method when the renderer process (web page) has crashed.
|
||
|
||
### BrowserWindow.close()
|
||
|
||
Try to close the window, this has the same effect with user manually clicking
|
||
the close button of the window. The web page may cancel the close though, see
|
||
the [close event](#event-close).
|
||
|
||
### BrowserWindow.focus()
|
||
|
||
Focus on the window.
|
||
|
||
### BrowserWindow.isFocused()
|
||
|
||
Returns whether the window is focused.
|
||
|
||
### BrowserWindow.show()
|
||
|
||
Shows and gives focus to the window.
|
||
|
||
### BrowserWindow.showInactive()
|
||
|
||
Shows the window but doesn't focus on it.
|
||
|
||
### BrowserWindow.hide()
|
||
|
||
Hides the window.
|
||
|
||
### BrowserWindow.isVisible()
|
||
|
||
Returns whether the window is visible to the user.
|
||
|
||
### BrowserWindow.maximize()
|
||
|
||
Maximizes the window.
|
||
|
||
### BrowserWindow.unmaximize()
|
||
|
||
Unmaximizes the window.
|
||
|
||
### BrowserWindow.isMaximized()
|
||
|
||
Returns whether the window is maximized.
|
||
|
||
### BrowserWindow.minimize()
|
||
|
||
Minimizes the window. On some platforms the minimized window will be shown in
|
||
the Dock.
|
||
|
||
### BrowserWindow.restore()
|
||
|
||
Restores the window from minimized state to its previous state.
|
||
|
||
### BrowserWindow.isMinimized()
|
||
|
||
Returns whether the window is minimized.
|
||
|
||
### BrowserWindow.setFullScreen(flag)
|
||
|
||
* `flag` Boolean
|
||
|
||
Sets whether the window should be in fullscreen mode.
|
||
|
||
### BrowserWindow.isFullScreen()
|
||
|
||
Returns whether the window is in fullscreen mode.
|
||
|
||
### BrowserWindow.setBounds(options)
|
||
|
||
* `options` Object
|
||
* `x` Integer
|
||
* `y` Integer
|
||
* `width` Integer
|
||
* `height` Integer
|
||
|
||
Resizes and moves the window to `width`, `height`, `x`, `y`.
|
||
|
||
### BrowserWindow.getBounds()
|
||
|
||
Returns an object that contains window's width, height, x and y values.
|
||
|
||
### BrowserWindow.setSize(width, height)
|
||
|
||
* `width` Integer
|
||
* `height` Integer
|
||
|
||
Resizes the window to `width` and `height`.
|
||
|
||
### BrowserWindow.getSize()
|
||
|
||
Returns an array that contains window's width and height.
|
||
|
||
### BrowserWindow.setContentSize(width, height)
|
||
|
||
* `width` Integer
|
||
* `height` Integer
|
||
|
||
Resizes the window's client area (e.g. the web page) to `width` and `height`.
|
||
|
||
### BrowserWindow.getContentSize()
|
||
|
||
Returns an array that contains window's client area's width and height.
|
||
|
||
### BrowserWindow.setMinimumSize(width, height)
|
||
|
||
* `width` Integer
|
||
* `height` Integer
|
||
|
||
Sets the minimum size of window to `width` and `height`.
|
||
|
||
### BrowserWindow.getMinimumSize()
|
||
|
||
Returns an array that contains window's minimum width and height.
|
||
|
||
### BrowserWindow.setMaximumSize(width, height)
|
||
|
||
* `width` Integer
|
||
* `height` Integer
|
||
|
||
Sets the maximum size of window to `width` and `height`.
|
||
|
||
### BrowserWindow.getMaximumSize()
|
||
|
||
Returns an array that contains window's maximum width and height.
|
||
|
||
### BrowserWindow.setResizable(resizable)
|
||
|
||
* `resizable` Boolean
|
||
|
||
Sets whether the window can be manually resized by user.
|
||
|
||
### BrowserWindow.isResizable()
|
||
|
||
Returns whether the window can be manually resized by user.
|
||
|
||
### BrowserWindow.setAlwaysOnTop(flag)
|
||
|
||
* `flag` Boolean
|
||
|
||
Sets whether the window should show always on top of other windows. After
|
||
setting this, the window is still a normal window, not a toolbox window which
|
||
can not be focused on.
|
||
|
||
### BrowserWindow.isAlwaysOnTop()
|
||
|
||
Returns whether the window is always on top of other windows.
|
||
|
||
### BrowserWindow.center()
|
||
|
||
Moves window to the center of the screen.
|
||
|
||
### BrowserWindow.setPosition(x, y)
|
||
|
||
* `x` Integer
|
||
* `y` Integer
|
||
|
||
Moves window to `x` and `y`.
|
||
|
||
### BrowserWindow.getPosition()
|
||
|
||
Returns an array that contains window's current position.
|
||
|
||
### BrowserWindow.setTitle(title)
|
||
|
||
* `title` String
|
||
|
||
Changes the title of native window to `title`.
|
||
|
||
### BrowserWindow.getTitle()
|
||
|
||
Returns the title of the native window.
|
||
|
||
**Note:** The title of web page can be different from the title of the native
|
||
window.
|
||
|
||
### BrowserWindow.flashFrame(flag)
|
||
|
||
* `flag` Boolean
|
||
|
||
Starts or stops flashing the window to attract user's attention.
|
||
|
||
### BrowserWindow.setSkipTaskbar(skip)
|
||
|
||
* `skip` Boolean
|
||
|
||
Makes the window not show in the taskbar.
|
||
|
||
### BrowserWindow.setKiosk(flag)
|
||
|
||
* `flag` Boolean
|
||
|
||
Enters or leaves the kiosk mode.
|
||
|
||
### BrowserWindow.isKiosk()
|
||
|
||
Returns whether the window is in kiosk mode.
|
||
|
||
### BrowserWindow.setRepresentedFilename(filename)
|
||
|
||
* `filename` String
|
||
|
||
Sets the pathname of the file the window represents, and the icon of the file
|
||
will show in window's title bar.
|
||
|
||
__Note__: This API is only available on OS X.
|
||
|
||
### BrowserWindow.getRepresentedFilename()
|
||
|
||
Returns the pathname of the file the window represents.
|
||
|
||
__Note__: This API is only available on OS X.
|
||
|
||
### BrowserWindow.setDocumentEdited(edited)
|
||
|
||
* `edited` Boolean
|
||
|
||
Specifies whether the window’s document has been edited, and the icon in title
|
||
bar will become grey when set to `true`.
|
||
|
||
__Note__: This API is only available on OS X.
|
||
|
||
### BrowserWindow.IsDocumentEdited()
|
||
|
||
Whether the window's document has been edited.
|
||
|
||
__Note__: This API is only available on OS X.
|
||
|
||
### BrowserWindow.openDevTools([options])
|
||
|
||
* `options` Object
|
||
* `detach` Boolean - opens devtools in a new window
|
||
|
||
Opens the developer tools.
|
||
|
||
### BrowserWindow.closeDevTools()
|
||
|
||
Closes the developer tools.
|
||
|
||
### BrowserWindow.isDevToolsOpened()
|
||
|
||
Returns whether the developer tools are opened.
|
||
|
||
### BrowserWindow.toggleDevTools()
|
||
|
||
Toggle the developer tools.
|
||
|
||
### BrowserWindow.inspectElement(x, y)
|
||
|
||
* `x` Integer
|
||
* `y` Integer
|
||
|
||
Starts inspecting element at position (`x`, `y`).
|
||
|
||
### BrowserWindow.inspectServiceWorker()
|
||
|
||
Opens the developer tools for the service worker context present in the web contents.
|
||
|
||
### BrowserWindow.focusOnWebView()
|
||
|
||
### BrowserWindow.blurWebView()
|
||
|
||
### BrowserWindow.capturePage([rect, ]callback)
|
||
|
||
* `rect` Object - The area of page to be captured
|
||
* `x` Integer
|
||
* `y` Integer
|
||
* `width` Integer
|
||
* `height` Integer
|
||
* `callback` Function
|
||
|
||
Captures the snapshot of page within `rect`, upon completion `callback` would be
|
||
called with `callback(image)`, the `image` is an instance of
|
||
[NativeImage](native-image.md) that stores data of the snapshot. Omitting the
|
||
`rect` would capture the whole visible page.
|
||
|
||
**Note:** Be sure to read documents on remote buffer in
|
||
[remote](remote.md) if you are going to use this API in renderer
|
||
process.
|
||
|
||
### BrowserWindow.print([options])
|
||
|
||
Same with `webContents.print([options])`
|
||
|
||
### BrowserWindow.printToPDF(options, callback)
|
||
|
||
Same with `webContents.printToPDF(options, callback)`
|
||
|
||
### BrowserWindow.loadUrl(url, [options])
|
||
|
||
Same with `webContents.loadUrl(url, [options])`.
|
||
|
||
### BrowserWindow.reload()
|
||
|
||
Same with `webContents.reload`.
|
||
|
||
### BrowserWindow.setMenu(menu)
|
||
|
||
* `menu` Menu
|
||
|
||
Sets the `menu` as the window's menu bar, setting it to `null` will remove the
|
||
menu bar.
|
||
|
||
__Note:__ This API is not available on OS X.
|
||
|
||
### BrowserWindow.setProgressBar(progress)
|
||
|
||
* `progress` Double
|
||
|
||
Sets progress value in progress bar. Valid range is [0, 1.0].
|
||
|
||
Remove progress bar when progress < 0;
|
||
Change to indeterminate mode when progress > 1.
|
||
|
||
On Linux platform, only supports Unity desktop environment, you need to specify
|
||
the `*.desktop` file name to `desktopName` field in `package.json`. By default,
|
||
it will assume `app.getName().desktop`.
|
||
|
||
### BrowserWindow.setOverlayIcon(overlay, description)
|
||
|
||
* `overlay` [NativeImage](native-image.md) - the icon to display on the bottom
|
||
right corner of the taskbar icon. If this parameter is `null`, the overlay is
|
||
cleared
|
||
* `description` String - a description that will be provided to Accessibility
|
||
screen readers
|
||
|
||
Sets a 16px overlay onto the current taskbar icon, usually used to convey some sort of application status or to passively notify the user.
|
||
|
||
__Note:__ This API is only available on Windows (Windows 7 and above)
|
||
|
||
### BrowserWindow.showDefinitionForSelection()
|
||
|
||
Shows pop-up dictionary that searches the selected word on the page.
|
||
|
||
__Note__: This API is only available on OS X.
|
||
|
||
### BrowserWindow.setAutoHideMenuBar(hide)
|
||
|
||
* `hide` Boolean
|
||
|
||
Sets whether the window menu bar should hide itself automatically. Once set the
|
||
menu bar will only show when users press the single `Alt` key.
|
||
|
||
If the menu bar is already visible, calling `setAutoHideMenuBar(true)` won't
|
||
hide it immediately.
|
||
|
||
### BrowserWindow.isMenuBarAutoHide()
|
||
|
||
Returns whether menu bar automatically hides itself.
|
||
|
||
### BrowserWindow.setMenuBarVisibility(visible)
|
||
|
||
* `visible` Boolean
|
||
|
||
Sets whether the menu bar should be visible. If the menu bar is auto-hide, users
|
||
can still bring up the menu bar by pressing the single `Alt` key.
|
||
|
||
### BrowserWindow.isMenuBarVisible()
|
||
|
||
Returns whether the menu bar is visible.
|
||
|
||
### BrowserWindow.setVisibleOnAllWorkspaces(visible)
|
||
|
||
* `visible` Boolean
|
||
|
||
Sets whether the window should be visible on all workspaces.
|
||
|
||
**Note:** This API does nothing on Windows.
|
||
|
||
### BrowserWindow.isVisibleOnAllWorkspaces()
|
||
|
||
Returns whether the window is visible on all workspaces.
|
||
|
||
**Note:** This API always returns false on Windows.
|
||
|
||
## Class: WebContents
|
||
|
||
A `WebContents` is responsible for rendering and controlling a web page.
|
||
|
||
`WebContents` is an
|
||
[EventEmitter](http://nodejs.org/api/events.html#events_class_events_eventemitter).
|
||
|
||
### Event: 'did-finish-load'
|
||
|
||
Emitted when the navigation is done, i.e. the spinner of the tab will stop
|
||
spinning, and the `onload` event was dispatched.
|
||
|
||
### Event: 'did-fail-load'
|
||
|
||
* `event` Event
|
||
* `errorCode` Integer
|
||
* `errorDescription` String
|
||
|
||
This event is like `did-finish-load`, but emitted when the load failed or was
|
||
cancelled, e.g. `window.stop()` is invoked.
|
||
|
||
### Event: 'did-frame-finish-load'
|
||
|
||
* `event` Event
|
||
* `isMainFrame` Boolean
|
||
|
||
Emitted when a frame has done navigation.
|
||
|
||
### Event: 'did-start-loading'
|
||
|
||
Corresponds to the points in time when the spinner of the tab starts spinning.
|
||
|
||
### Event: 'did-stop-loading'
|
||
|
||
Corresponds to the points in time when the spinner of the tab stops spinning.
|
||
|
||
### Event: 'did-get-response-details'
|
||
|
||
* `event` Event
|
||
* `status` Boolean
|
||
* `newUrl` String
|
||
* `originalUrl` String
|
||
* `httpResponseCode` Integer
|
||
* `requestMethod` String
|
||
* `referrer` String
|
||
* `headers` Object
|
||
|
||
Emitted when details regarding a requested resource is available.
|
||
`status` indicates the socket connection to download the resource.
|
||
|
||
### Event: 'did-get-redirect-request'
|
||
|
||
* `event` Event
|
||
* `oldUrl` String
|
||
* `newUrl` String
|
||
* `isMainFrame` Boolean
|
||
|
||
Emitted when a redirect was received while requesting a resource.
|
||
|
||
### Event: 'dom-ready'
|
||
|
||
* `event` Event
|
||
|
||
Emitted when document in the given frame is loaded.
|
||
|
||
### Event: 'page-favicon-updated'
|
||
|
||
* `event` Event
|
||
* `favicons` Array - Array of Urls
|
||
|
||
Emitted when page receives favicon urls.
|
||
|
||
### Event: 'new-window'
|
||
|
||
* `event` Event
|
||
* `url` String
|
||
* `frameName` String
|
||
* `disposition` String - Can be `default`, `foreground-tab`, `background-tab`,
|
||
`new-window` and `other`
|
||
|
||
Emitted when the page requested to open a new window for `url`. It could be
|
||
requested by `window.open` or an external link like `<a target='_blank'>`.
|
||
|
||
By default a new `BrowserWindow` will be created for the `url`.
|
||
|
||
Calling `event.preventDefault()` can prevent creating new windows.
|
||
|
||
### Event: 'will-navigate'
|
||
|
||
* `event` Event
|
||
* `url` String
|
||
|
||
Emitted when user or the page wants to start an navigation, it can happen when
|
||
`window.location` object is changed or user clicks a link in the page.
|
||
|
||
This event will not emit when the navigation is started programmatically with APIs
|
||
like `WebContents.loadUrl` and `WebContents.back`.
|
||
|
||
Calling `event.preventDefault()` can prevent the navigation.
|
||
|
||
### Event: 'crashed'
|
||
|
||
Emitted when the renderer process is crashed.
|
||
|
||
### Event: 'plugin-crashed'
|
||
|
||
* `event` Event
|
||
* `name` String
|
||
* `version` String
|
||
|
||
Emitted when a plugin process is crashed.
|
||
|
||
### Event: 'destroyed'
|
||
|
||
Emitted when the WebContents is destroyed.
|
||
|
||
### WebContents.session
|
||
|
||
Returns the `Session` object used by this WebContents.
|
||
|
||
### WebContents.loadUrl(url, [options])
|
||
|
||
* `url` URL
|
||
* `options` URL
|
||
* `httpReferrer` String - A HTTP Referer url
|
||
* `userAgent` String - A user agent originating the request
|
||
|
||
Loads the `url` in the window, the `url` must contains the protocol prefix,
|
||
e.g. the `http://` or `file://`.
|
||
|
||
### WebContents.getUrl()
|
||
|
||
Returns URL of current web page.
|
||
|
||
### WebContents.getTitle()
|
||
|
||
Returns the title of web page.
|
||
|
||
### WebContents.isLoading()
|
||
|
||
Returns whether web page is still loading resources.
|
||
|
||
### WebContents.isWaitingForResponse()
|
||
|
||
Returns whether web page is waiting for a first-response for the main resource
|
||
of the page.
|
||
|
||
### WebContents.stop()
|
||
|
||
Stops any pending navigation.
|
||
|
||
### WebContents.reload()
|
||
|
||
Reloads current page.
|
||
|
||
### WebContents.reloadIgnoringCache()
|
||
|
||
Reloads current page and ignores cache.
|
||
|
||
### WebContents.canGoBack()
|
||
|
||
Returns whether the web page can go back.
|
||
|
||
### WebContents.canGoForward()
|
||
|
||
Returns whether the web page can go forward.
|
||
|
||
### WebContents.canGoToOffset(offset)
|
||
|
||
* `offset` Integer
|
||
|
||
Returns whether the web page can go to `offset`.
|
||
|
||
### WebContents.clearHistory()
|
||
|
||
Clears the navigation history.
|
||
|
||
### WebContents.goBack()
|
||
|
||
Makes the web page go back.
|
||
|
||
### WebContents.goForward()
|
||
|
||
Makes the web page go forward.
|
||
|
||
### WebContents.goToIndex(index)
|
||
|
||
* `index` Integer
|
||
|
||
Navigates to the specified absolute index.
|
||
|
||
### WebContents.goToOffset(offset)
|
||
|
||
* `offset` Integer
|
||
|
||
Navigates to the specified offset from the "current entry".
|
||
|
||
### WebContents.isCrashed()
|
||
|
||
Whether the renderer process has crashed.
|
||
|
||
### WebContents.setUserAgent(userAgent)
|
||
|
||
* `userAgent` String
|
||
|
||
Overrides the user agent for this page.
|
||
|
||
### WebContents.insertCSS(css)
|
||
|
||
* `css` String
|
||
|
||
Injects CSS into this page.
|
||
|
||
### WebContents.executeJavaScript(code)
|
||
|
||
* `code` String
|
||
|
||
Evaluates `code` in page.
|
||
|
||
### WebContents.setAudioMuted(muted)
|
||
|
||
+ `muted` Boolean
|
||
|
||
Set the page muted.
|
||
|
||
### WebContents.isAudioMuted()
|
||
|
||
Returns whether this page has been muted.
|
||
|
||
### WebContents.undo()
|
||
|
||
Executes editing command `undo` in page.
|
||
|
||
### WebContents.redo()
|
||
|
||
Executes editing command `redo` in page.
|
||
|
||
### WebContents.cut()
|
||
|
||
Executes editing command `cut` in page.
|
||
|
||
### WebContents.copy()
|
||
|
||
Executes editing command `copy` in page.
|
||
|
||
### WebContents.paste()
|
||
|
||
Executes editing command `paste` in page.
|
||
|
||
### WebContents.pasteAndMatchStyle()
|
||
|
||
Executes editing command `pasteAndMatchStyle` in page.
|
||
|
||
### WebContents.delete()
|
||
|
||
Executes editing command `delete` in page.
|
||
|
||
### WebContents.selectAll()
|
||
|
||
Executes editing command `selectAll` in page.
|
||
|
||
### WebContents.unselect()
|
||
|
||
Executes editing command `unselect` in page.
|
||
|
||
### WebContents.replace(text)
|
||
|
||
* `text` String
|
||
|
||
Executes editing command `replace` in page.
|
||
|
||
### WebContents.replaceMisspelling(text)
|
||
|
||
* `text` String
|
||
|
||
Executes editing command `replaceMisspelling` in page.
|
||
|
||
### WebContents.hasServiceWorker(callback)
|
||
|
||
* `callback` Function
|
||
|
||
Checks if any serviceworker is registered and returns boolean as
|
||
response to `callback`.
|
||
|
||
### WebContents.unregisterServiceWorker(callback)
|
||
|
||
* `callback` Function
|
||
|
||
Unregisters any serviceworker if present and returns boolean as
|
||
response to `callback` when the JS promise is fullfilled or false
|
||
when the JS promise is rejected.
|
||
|
||
### WebContents.print([options])
|
||
|
||
* `options` Object
|
||
* `silent` Boolean - Don't ask user for print settings, defaults to `false`
|
||
* `printBackground` Boolean - Also prints the background color and image of
|
||
the web page, defaults to `false`.
|
||
|
||
Prints window's web page. When `silent` is set to `false`, Electron will pick
|
||
up system's default printer and default settings for printing.
|
||
|
||
Calling `window.print()` in web page is equivalent to call
|
||
`WebContents.print({silent: false, printBackground: false})`.
|
||
|
||
**Note:** On Windows, the print API relies on `pdf.dll`. If your application
|
||
doesn't need print feature, you can safely remove `pdf.dll` in saving binary
|
||
size.
|
||
|
||
### WebContents.printToPDF(options, callback)
|
||
|
||
* `options` Object
|
||
* `marginsType` Integer - Specify the type of margins to use
|
||
* 0 - default
|
||
* 1 - none
|
||
* 2 - minimum
|
||
* `printBackground` Boolean - Whether to print CSS backgrounds.
|
||
* `printSelectionOnly` Boolean - Whether to print selection only.
|
||
* `landscape` Boolean - `true` for landscape, `false` for portrait.
|
||
|
||
* `callback` Function - `function(error, data) {}`
|
||
* `error` Error
|
||
* `data` Buffer - PDF file content
|
||
|
||
Prints windows' web page as PDF with Chromium's preview printing custom
|
||
settings.
|
||
|
||
By default, an empty `options` will be regarded as
|
||
`{marginsType:0, printBackgrounds:false, printSelectionOnly:false,
|
||
landscape:false}`.
|
||
|
||
```javascript
|
||
var BrowserWindow = require('browser-window');
|
||
var fs = require('fs');
|
||
|
||
var win = new BrowserWindow({width: 800, height: 600});
|
||
win.loadUrl("http://github.com");
|
||
|
||
win.webContents.on("did-finish-load", function() {
|
||
// Use default printing options
|
||
win.webContents.printToPDF({}, function(error, data) {
|
||
if (error) throw error;
|
||
fs.writeFile(dist, data, function(error) {
|
||
if (err)
|
||
alert('write pdf file error', error);
|
||
})
|
||
})
|
||
});
|
||
```
|
||
|
||
### WebContents.send(channel[, args...])
|
||
|
||
* `channel` String
|
||
|
||
Send `args..` to the web page via `channel` in asynchronous message, the web
|
||
page can handle it by listening to the `channel` event of `ipc` module.
|
||
|
||
An example of sending messages from the main process to the renderer process:
|
||
|
||
```javascript
|
||
// On the main process.
|
||
var window = null;
|
||
app.on('ready', function() {
|
||
window = new BrowserWindow({width: 800, height: 600});
|
||
window.loadUrl('file://' + __dirname + '/index.html');
|
||
window.webContents.on('did-finish-load', function() {
|
||
window.webContents.send('ping', 'whoooooooh!');
|
||
});
|
||
});
|
||
```
|
||
|
||
```html
|
||
// index.html
|
||
<html>
|
||
<body>
|
||
<script>
|
||
require('ipc').on('ping', function(message) {
|
||
console.log(message); // Prints "whoooooooh!"
|
||
});
|
||
</script>
|
||
</body>
|
||
</html>
|
||
```
|
||
|
||
**Note:**
|
||
|
||
1. The IPC message handler in web pages do not have a `event` parameter, which
|
||
is different from the handlers on the main process.
|
||
2. There is no way to send synchronous messages from the main process to a
|
||
renderer process, because it would be very easy to cause dead locks.
|
||
|
||
## Class: Session
|
||
|
||
### Session.cookies
|
||
|
||
The `cookies` gives you ability to query and modify cookies, an example is:
|
||
|
||
```javascipt
|
||
var BrowserWindow = require('browser-window');
|
||
|
||
var win = new BrowserWindow({ width: 800, height: 600 });
|
||
|
||
win.loadUrl('https://github.com');
|
||
|
||
win.webContents.on('did-finish-load', function() {
|
||
// Query all cookies.
|
||
win.webContents.session.cookies.get({}, function(error, cookies) {
|
||
if (error) throw error;
|
||
console.log(cookies);
|
||
});
|
||
|
||
// Query all cookies that are associated with a specific url.
|
||
win.webContents.session.cookies.get({ url : "http://www.github.com" },
|
||
function(error, cookies) {
|
||
if (error) throw error;
|
||
console.log(cookies);
|
||
});
|
||
|
||
// Set a cookie with the given cookie data;
|
||
// may overwrite equivalent cookies if they exist.
|
||
win.webContents.session.cookies.set(
|
||
{ url : "http://www.github.com", name : "dummy_name", value : "dummy"},
|
||
function(error, cookies) {
|
||
if (error) throw error;
|
||
console.log(cookies);
|
||
});
|
||
});
|
||
```
|
||
|
||
### Session.cookies.get(details, callback)
|
||
|
||
* `details` Object
|
||
* `url` String - Retrieves cookies which are associated with `url`.
|
||
Empty imples retrieving cookies of all urls.
|
||
* `name` String - Filters cookies by name
|
||
* `domain` String - Retrieves cookies whose domains match or are subdomains of `domains`
|
||
* `path` String - Retrieves cookies whose path matches `path`
|
||
* `secure` Boolean - Filters cookies by their Secure property
|
||
* `session` Boolean - Filters out session or persistent cookies.
|
||
* `callback` Function - function(error, cookies)
|
||
* `error` Error
|
||
* `cookies` Array - array of `cookie` objects.
|
||
* `cookie` - Object
|
||
* `name` String - The name of the cookie
|
||
* `value` String - The value of the cookie
|
||
* `domain` String - The domain of the cookie
|
||
* `host_only` String - Whether the cookie is a host-only cookie
|
||
* `path` String - The path of the cookie
|
||
* `secure` Boolean - Whether the cookie is marked as Secure (typically HTTPS)
|
||
* `http_only` Boolean - Whether the cookie is marked as HttpOnly
|
||
* `session` Boolean - Whether the cookie is a session cookie or a persistent
|
||
cookie with an expiration date.
|
||
* `expirationDate` Double - (Option) The expiration date of the cookie as
|
||
the number of seconds since the UNIX epoch. Not provided for session cookies.
|
||
|
||
|
||
### Session.cookies.set(details, callback)
|
||
|
||
* `details` Object
|
||
* `url` String - Retrieves cookies which are associated with `url`
|
||
* `name` String - The name of the cookie. Empty by default if omitted.
|
||
* `value` String - The value of the cookie. Empty by default if omitted.
|
||
* `domain` String - The domain of the cookie. Empty by default if omitted.
|
||
* `path` String - The path of the cookie. Empty by default if omitted.
|
||
* `secure` Boolean - Whether the cookie should be marked as Secure. Defaults to false.
|
||
* `session` Boolean - Whether the cookie should be marked as HttpOnly. Defaults to false.
|
||
* `expirationDate` Double - The expiration date of the cookie as the number of
|
||
seconds since the UNIX epoch. If omitted, the cookie becomes a session cookie.
|
||
|
||
* `callback` Function - function(error)
|
||
* `error` Error
|
||
|
||
### Session.cookies.remove(details, callback)
|
||
|
||
* `details` Object
|
||
* `url` String - The URL associated with the cookie
|
||
* `name` String - The name of cookie to remove
|
||
* `callback` Function - function(error)
|
||
* `error` Error
|
||
|
||
### Session.clearCache(callback)
|
||
|
||
* `callback` Function - Called when operation is done
|
||
|
||
Clears the session's HTTP cache.
|
||
|
||
### Session.clearStorageData([options, ]callback)
|
||
|
||
* `options` Object
|
||
* `origin` String - Should follow `window.location.origin`'s representation
|
||
`scheme://host:port`
|
||
* `storages` Array - The types of storages to clear, can contain:
|
||
`appcache`, `cookies`, `filesystem`, `indexdb`, `localstorage`,
|
||
`shadercache`, `websql`, `serviceworkers`
|
||
* `quotas` Array - The types of quotas to clear, can contain:
|
||
`temporary`, `persistent`, `syncable`
|
||
* `callback` Function - Called when operation is done
|
||
|
||
Clears the data of web storages.
|