Enum WebViewEvent 

pub enum WebViewEvent {
    DevToolsResult {
        request_id: u32,
        ok: bool,
        body: String,
    },
    CredentialResult(CredentialReply),
    ServiceSessionResult(ServiceSessionReply),
    ExtensionAction {
        id: String,
        global: bool,
        change: ExtensionActionChange,
    },
    ExtensionActionReset,
    ExtensionOpenPopup {
        id: String,
        url: String,
    },
    ExtensionExecuteAction {
        id: String,
    },
    ExtensionShortcuts(Vec<ExtensionShortcut>),
    ExtensionMenu {
        id: String,
        items: Vec<ExtensionMenuItem>,
    },
    ExtensionNotification {
        id: String,
        notification: String,
        notice: Option<ExtensionNotice>,
    },
    ExtensionPermissionRequest {
        request: u32,
        id: String,
        asked: ExtensionPermissionSet,
    },
    ExtensionPermissions {
        id: String,
        granted: ExtensionPermissionSet,
    },
    ExtensionPermissionClosed {
        request: u32,
    },
    ExtensionDownloadOpen {
        id: u32,
        reveal: bool,
    },
    ExtensionSignIn {
        id: String,
        url: String,
        interactive: bool,
        flow: u32,
    },
    ExtensionOmniboxSuggestions {
        id: String,
        request: u32,
        suggestions: Vec<OmniboxSuggestion>,
    },
    ExtensionOmniboxDefault {
        id: String,
        description: Option<String>,
    },
    ExtensionSidePanel {
        id: String,
        change: ExtensionSidePanelChange,
    },
    SiteStatus(SiteStatus),
    SiteResult {
        request_id: u32,
        origin: String,
        generation: u64,
        action: String,
        success: bool,
        message: String,
    },
    TabClosed,
    TabDetached,
    TabCloseBlocked,
    ContextMenu {
        id: u32,
        x: f64,
        y: f64,
        link: String,
        items: Vec<ContextMenuItem>,
    },
    ContextMenuClosed {
        id: u32,
    },
    PageDialog(PageDialog),
    PageDialogClosed {
        id: u32,
    },
    FindResult {
        id: u32,
        count: i32,
        active: i32,
        final_update: bool,
    },
    ZoomChanged(f64),
    NavigationHistory {
        request_id: u32,
        direction: NavigationDirection,
        entries: Vec<NavigationEntry>,
    },
    PermissionRequested {
        id: u32,
        origin: String,
        permissions: String,
    },
    PermissionClosed {
        id: u32,
    },
    NativeDownloadRequested {
        id: u32,
        url: String,
        name: String,
    },
    DownloadUpdated {
        id: u32,
        state: String,
        path: String,
        name: String,
        url: String,
        retryable: bool,
        received: u64,
        total: u64,
        error: String,
    },
    DownloadRuntime {
        admitted: u32,
        detached: u32,
        accepting: bool,
        error: String,
    },
    UriChanged(String),
    TitleChanged(String),
    FaviconChanged {
        page_url: String,
        width: u32,
        height: u32,
        png: Arc<Vec<u8>>,
    },
    AudioMutedChanged(bool),
    MediaPlayingChanged {
        page_url: String,
        document_generation: u64,
        playing: bool,
    },
    FullscreenChanged(bool),
    RendererTerminated,
    LoadProgress(f64),
    LoadFinished,
    NavigationOutcome {
        request_id: u32,
        uri: String,
        error: Option<String>,
    },
    LoadFinishedAt {
        uri: String,
    },
    LoadFailed {
        uri: String,
        error: String,
    },
    HistoryChanged {
        can_go_back: bool,
        can_go_forward: bool,
    },
    MediaElement {
        request_id: u64,
        element: MediaElementInfo,
    },
    MediaElementUnavailable {
        request_id: u64,
    },
    PageResult {
        request_id: u32,
        result: Result<PageReply, PageFailure>,
    },
    DocumentSize {
        width: f64,
        height: f64,
        scroll_y: f64,
    },
    SelectionText {
        request_id: u32,
        text: String,
    },
    ClipboardWrite {
        text: String,
        html: Option<String>,
        secret: bool,
    },
    ClipboardRead {
        request_id: u32,
    },
    LinkHovered(String),
    FindSelection {
        id: u32,
        x: f64,
        y: f64,
        width: f64,
        height: f64,
    },
    PaintSnapshot {
        request_id: u32,
        snapshot: Option<String>,
    },
    PaintResource {
        request_id: u32,
        bytes: Option<Vec<u8>>,
    },
    DownloadRequested {
        id: String,
        uri: String,
        suggested_filename: String,
    },
    DownloadProgress {
        id: String,
        received_bytes: u64,
        total_bytes: Option<u64>,
        progress: f64,
    },
    DownloadFinished {
        id: String,
        path: String,
    },
    DownloadFailed {
        id: String,
        error: String,
        cancelled: bool,
    },
}

Navigation / UI state changes from the engine to the host app, folded into its own state (address bar text, title, progress) during sync.

Variants

DevToolsResult

The reply to a WebViewCommand::DevTools: the JSON result when ok, otherwise the JSON error (or a message).

Fields

request_id: u32

ok: bool

body: String

CredentialResult(CredentialReply)

ServiceSessionResult(ServiceSessionReply)

ExtensionAction

An extension changed its toolbar button, for this tab alone or for every tab (global).

Fields

id: String

global: bool

change: ExtensionActionChange

ExtensionActionReset

A new document in this tab: what extensions set for their buttons on this tab alone is gone.

ExtensionOpenPopup

An extension asked to open its popup (action.openPopup) over this tab’s page: url is among its own pages.

Fields

id: String

url: String

ExtensionExecuteAction

The person pressed the keyboard shortcut of an extension’s toolbar button (_execute_action) over this tab’s page: act as a click on the button does.

Fields

id: String

ExtensionShortcuts(Vec<ExtensionShortcut>)

The keys extensions’ commands hold now, as Chrome names them: the Browser runs them (ExtensionCommandKey) while its own field has the keyboard, before the field sees them.

ExtensionMenu

What extension id’s toolbar button menu holds now; empty when it holds nothing.

Fields

id: String

items: Vec<ExtensionMenuItem>

ExtensionNotification

An extension showed or changed its notification notification (notice), or took it away (None). A notification is no tab’s: it comes through the page the person used last.

Fields

id: String

notification: String

notice: Option<ExtensionNotice>

ExtensionPermissionRequest

An extension asks for more access (chrome.permissions.request), all of it among what its manifest offers for later: ask the person, and answer with WebViewCommand::ExtensionPermissionDecision.

Fields

request: u32

id: String

asked: ExtensionPermissionSet

ExtensionPermissions

What an extension holds of what it may ask for changed: it was granted more, or gave some up. granted is all it holds now, which the Browser keeps with the extension.

Fields

id: String

granted: ExtensionPermissionSet

ExtensionPermissionClosed

The page an extension asked for more access on closed before the person answered: the extension was told no, and the question (WebViewEvent::ExtensionPermissionRequest) goes unanswered.

Fields

request: u32

ExtensionDownloadOpen

An extension asked to open one of the engine’s complete downloads (chrome.downloads.open), or show it in its folder (reveal, chrome.downloads.show), from this tab’s window.

Fields

id: u32

reveal: bool

ExtensionSignIn

An extension asks the person to sign in on the web page url (identity.launchWebAuthFlow), over this tab’s page: show it where its popup shows, or when it may not ask the person (interactive false) load it out of sight, in a tab marked with WebViewCommand::ExtensionSignInPanel for sign-in flow. The engine ends the sign-in, and closes that tab, once the page goes to the extension’s own address.

Fields

id: String

url: String

interactive: bool

flow: u32

ExtensionOmniboxSuggestions

What an extension suggests for what follows its keyword in this page’s address, answering request (OmniboxInput::Changed).

Fields

id: String

request: u32

suggestions: Vec<OmniboxSuggestion>

ExtensionOmniboxDefault

The suggestion an extension shows first while its keyword is typed (omnibox.setDefaultSuggestion), in Chrome’s markup with %s for what is typed; None for none.

Fields

id: String

description: Option<String>

ExtensionSidePanel

What an extension asks of its side panel beside this tab’s page (chrome.sidePanel).

Fields

id: String

change: ExtensionSidePanelChange

SiteStatus(SiteStatus)

SiteResult

Fields

request_id: u32

origin: String

generation: u64

action: String

success: bool

message: String

TabClosed

TabDetached

The visible route is retired while CEF remains alive solely as a bounded transfer owner. Physical destruction still emits TabClosed.

TabCloseBlocked

ContextMenu

Fields

id: u32

x: f64

y: f64

link: String

items: Vec<ContextMenuItem>

ContextMenuClosed

Fields

id: u32

PageDialog(PageDialog)

The page asks a question of its own and waits for its answer.

PageDialogClosed

The page no longer waits on its question id: it was answered, or the page navigated or asked another.

Fields

id: u32

FindResult

Fields

id: u32

count: i32

active: i32

final_update: bool

ZoomChanged(f64)

NavigationHistory

Fields

request_id: u32

direction: NavigationDirection

entries: Vec<NavigationEntry>

PermissionRequested

Fields

id: u32

origin: String

permissions: String

PermissionClosed

Fields

id: u32

NativeDownloadRequested

Fields

id: u32

url: String

name: String

DownloadUpdated

Fields

id: u32

state: String

path: String

name: String

url: String

retryable: bool

received: u64

total: u64

error: String

DownloadRuntime

Runtime-wide native ownership evidence used by explicit window exit.

Fields

admitted: u32

detached: u32

accepting: bool

error: String

UriChanged(String)

TitleChanged(String)

FaviconChanged

Fields

page_url: String

width: u32

height: u32

png: Arc<Vec<u8>>

AudioMutedChanged(bool)

MediaPlayingChanged

Fields

page_url: String

document_generation: u64

playing: bool

FullscreenChanged(bool)

The page’s CEF content-fullscreen intent changed.

RendererTerminated

The renderer owning this tab exited without a reliable fullscreen edge.

LoadProgress(f64)

Load progress in 0.0..=1.0.

LoadFinished

NavigationOutcome

A terminal outcome for an admitted request, independent of visual load events.

Fields

request_id: u32

uri: String

error: Option<String>

LoadFinishedAt

Completion tagged with its document URL, so stale startup loads can be ignored.

Fields

uri: String

LoadFailed

Fields

uri: String

error: String

HistoryChanged

Fields

can_go_back: bool

can_go_forward: bool

MediaElement

Fields

request_id: u64

element: MediaElementInfo

MediaElementUnavailable

Fields

request_id: u64

PageResult

Fields

request_id: u32

result: Result<PageReply, PageFailure>

DocumentSize

The page’s document in CSS pixels: its laid-out size, never less than the view’s, and how far it is scrolled down. Sent while WebViewCommand::ReportDocumentSize asks for it, when any changes.

Fields

width: f64

height: f64

scroll_y: f64

SelectionText

The page’s selection as text, answering WebViewCommand::CopySelection; empty when nothing is selected.

Fields

request_id: u32

text: String

ClipboardWrite

What the page copied, where the engine cannot reach the system clipboard itself (Linux): a script’s copy, a site’s copy button, the person’s Ctrl+C, an extension’s. The embedder puts it on the system clipboard, html as its formatting, and as a secret when secret (it came from a password field).

Fields

text: String

html: Option<String>

secret: bool

ClipboardRead

The page pastes or reads the clipboard (the person’s Ctrl+V, a read the person allowed), where the engine cannot reach the system clipboard itself: answer with WebViewCommand::AnswerClipboardRead and the same id, soon, as the page waits for it.

Fields

request_id: u32

LinkHovered(String)

The address of the link under the pointer, or empty when it left the link. Sent by an engine showing sealed documents.

FindSelection

Where the active match of find id is in the view, in logical pixels from its top left, so a host that scrolls the page itself (a mail sized to its whole document) can bring it into sight.

Fields

id: u32

x: f64

y: f64

width: f64

height: f64

PaintSnapshot

The raw layout snapshot (JSON), or None when the engine could not take one.

Fields

request_id: u32

snapshot: Option<String>

PaintResource

Fields

request_id: u32

bytes: Option<Vec<u8>>

DownloadRequested

WebKit received response metadata and is waiting for the host’s file portal to grant an explicit destination.

Fields

id: String

uri: String

suggested_filename: String

DownloadProgress

Fields

id: String

received_bytes: u64

total_bytes: Option<u64>

progress: f64

DownloadFinished

Fields

id: String

path: String

DownloadFailed

Fields

id: String

error: String

cancelled: bool

Trait Implementations

impl Clone for WebViewEvent

fn clone(&self) -> WebViewEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WebViewEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for WebViewEvent

fn eq(&self, other: &WebViewEvent) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for WebViewEvent