Twyco
912cfc28c2
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48 lines
2.2 KiB
Objective-C
48 lines
2.2 KiB
Objective-C
#import <WebKit/WebKit.h>
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typedef char *(*SettingsCallback)(const char *, const char *, const char *, bool);
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typedef void (*SettingsFree)(char *);
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@interface KanbanSettingsHandler : NSObject <WKScriptMessageHandlerWithReply>
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@property(nonatomic, weak) WKWebView *webview;
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@property(nonatomic, copy) NSString *label;
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@property(nonatomic) SettingsCallback callback;
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@property(nonatomic) SettingsFree releaseReply;
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@end
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@implementation KanbanSettingsHandler
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- (void)userContentController:(WKUserContentController *)controller
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didReceiveScriptMessage:(WKScriptMessage *)message
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replyHandler:(void (^)(id, NSString *))replyHandler {
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if (message.webView != self.webview || !message.frameInfo.isMainFrame ||
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![message.body isKindOfClass:NSString.class]) {
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replyHandler(nil, @"untrustedFrame");
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return;
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}
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char *reply = self.callback(self.label.UTF8String,
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message.frameInfo.request.URL.absoluteString.UTF8String,
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[(NSString *)message.body UTF8String], message.frameInfo.isMainFrame);
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if (!reply) { replyHandler(nil, @"bridgeUnavailable"); return; }
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NSString *value = [NSString stringWithUTF8String:reply];
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self.releaseReply(reply);
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replyHandler(value, nil);
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}
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@end
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void install_workspace_settings(void *pointer, const char *label, const char *script,
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SettingsCallback callback, SettingsFree releaseReply) {
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WKWebView *webview = (__bridge WKWebView *)pointer;
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KanbanSettingsHandler *handler = [KanbanSettingsHandler new];
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handler.webview = webview;
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handler.label = [NSString stringWithUTF8String:label];
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handler.callback = callback;
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handler.releaseReply = releaseReply;
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[webview.configuration.userContentController addScriptMessageHandlerWithReply:handler
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contentWorld:WKContentWorld.pageWorld name:@"kanbanSettings"];
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[webview.configuration.userContentController addUserScript:[[WKUserScript alloc]
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initWithSource:[NSString stringWithUTF8String:script]
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injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES]];
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// The initial document may already have started loading before the handler is attached.
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[webview evaluateJavaScript:[NSString stringWithUTF8String:script] completionHandler:nil];
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}
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