ui/cocoa/webview.m

changeset 113
dde28a806552
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/cocoa/webview.m	Mon Nov 10 21:52:51 2025 +0100
@@ -0,0 +1,273 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2025 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "webview.h"
+#import "Container.h"
+
+UIWIDGET ui_webview_create(UiObject *obj, UiWebviewArgs *args) {
+    UiVar *var = uic_widget_var(obj->ctx, obj->ctx, args->value, args->varname, UI_VAR_GENERIC);
+    
+    WKWebView *webview = [[WKWebView alloc]init];
+    
+    UiLayout layout = UI_ARGS2LAYOUT(args);
+    ui_container_add(obj, webview, &layout);
+    
+    if(var) {
+        UiGeneric *value = var->value;
+        value->get = ui_webview_get;
+        value->get_type = ui_webview_get_type;
+        value->set = ui_webview_set;
+        value->destroy = ui_webview_destroy;
+        value->obj = (__bridge void*)webview;
+        if(value->value) {
+            ui_webview_set(value, value->value, UI_WEBVIEW_OBJECT_TYPE);
+        } else {
+            UiWebViewData *data = malloc(sizeof(UiWebViewData));
+            memset(data, 0, sizeof(UiWebViewData));
+            data->webview = (__bridge void*)webview;
+            data->javascript = TRUE;
+            data->zoom = 1;
+            value->value = value;
+        }
+    }
+    
+    return (__bridge void*)webview;
+}
+
+UiWebViewData* ui_webview_data_clone(UiWebViewData *data) {
+    UiWebViewData *newdata = malloc(sizeof(UiWebViewData));
+    memset(newdata, 0, sizeof(UiWebViewData));
+    newdata->zoom = 1;
+    newdata->javascript = TRUE;
+    
+    if(data) {
+        newdata->uri = data->uri ? strdup(data->uri) : NULL;
+        newdata->mimetype = data->mimetype ? strdup(data->mimetype) : NULL;
+        newdata->encoding = data->encoding ? strdup(data->encoding) : NULL;
+        newdata->type = data->type;
+        newdata->javascript = data->javascript;
+        newdata->zoom = data->zoom;
+        if(data->content && data->contentlength > 0) {
+            newdata->content = malloc(data->contentlength + 1);
+            memcpy(newdata->content, data->content, data->contentlength);
+            newdata->content[data->contentlength] = 0;
+            newdata->contentlength = data->contentlength;
+        }
+    }
+    
+    return newdata;
+}
+
+void ui_webview_data_free(UiWebViewData *data) {
+    if(!data) {
+        return;
+    }
+    free(data->uri);
+    free(data->mimetype);
+    free(data->encoding);
+    free(data->content);
+    free(data);
+}
+
+void* ui_webview_get(UiGeneric *g) {
+    UiWebViewData *data = g->value;
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    
+    if(data->type == WEBVIEW_CONTENT_URL) {
+        (void)ui_webview_get_uri(g); // this updates data->uri
+    }
+    data->zoom = webview.pageZoom;
+    
+    return ui_webview_data_clone(g->value);
+}
+
+const char* ui_webview_get_type(UiGeneric *g) {
+    return UI_WEBVIEW_OBJECT_TYPE;
+}
+
+int ui_webview_set(UiGeneric *g, void *data, const char *type) {
+    if(!data || !type) {
+        return 1;
+    }
+    if(strcmp(type, UI_WEBVIEW_OBJECT_TYPE)) {
+        return 1;
+    }
+    ui_webview_data_free(g->value);
+    g->value = ui_webview_data_clone(data);
+    
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    UiWebViewData *webd = data;
+    if(webd->type == WEBVIEW_CONTENT_URL) {
+        const char *uri = webd->uri ? webd->uri : "about:blank";
+        NSURL *url = [NSURL URLWithString:[[NSString alloc] initWithUTF8String:uri]];
+        if(url) {
+            NSURLRequest *req = [NSURLRequest requestWithURL:url];
+            if(req) {
+                [webview loadRequest:req];
+            }
+        }
+    } else {
+        NSString *mimetype = [[NSString alloc]initWithUTF8String: webd->mimetype ? webd->mimetype : "text/plain"];
+        NSString *encoding = [[NSString alloc]initWithUTF8String: webd->encoding ? webd->encoding : "UTF-8"];
+        NSString *urlStr = [[NSString alloc]initWithUTF8String: webd->uri ? webd->uri : "file:///"];
+        NSURL *url = [NSURL URLWithString:urlStr];
+        NSData *content = [NSData dataWithBytes:webd->content length:webd->contentlength];
+        if(!url) {
+            url = [NSURL URLWithString:@"about:blank"];
+        }
+        [webview loadData:content MIMEType:mimetype characterEncodingName:encoding baseURL:url];
+    }
+    
+    webview.pageZoom = webd->zoom;
+    
+    return 1;
+}
+
+void ui_webview_destroy(UiGeneric *g) {
+    ui_webview_data_free(g->value);
+    g->value = NULL;
+}
+
+
+void ui_webview_load_url(UiGeneric *g, const char *url) {
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    UiWebViewData *data = g->value;
+    data->type = WEBVIEW_CONTENT_URL;
+    
+    if(!url) {
+        url = "about:blank";
+    }
+    
+    NSURL *nsurl = [NSURL URLWithString:[[NSString alloc] initWithUTF8String:url]];
+    if(nsurl) {
+        NSURLRequest *req = [NSURLRequest requestWithURL:nsurl];
+        if(req) {
+            [webview loadRequest:req];
+        }
+    }
+}
+
+void ui_webview_load_content(
+        UiGeneric *g,
+        const char *uri,
+        const char *content,
+        size_t contentlength,
+        const char *mimetype,
+        const char *encoding)
+{
+    UiWebViewData *data = g->value;
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    
+    data->type = WEBVIEW_CONTENT_CONTENT;
+    
+    free(data->uri);
+    data->uri = NULL;
+    free(data->mimetype);
+    free(data->encoding);
+    free(data->content);
+    data->type = WEBVIEW_CONTENT_URL;
+    
+    data->content = malloc(contentlength+1);
+    memcpy(data->content, content, contentlength);
+    data->content[contentlength] = 0;
+    
+    if(!mimetype) {
+        mimetype = "text/plain";
+    }
+    if(!encoding) {
+        encoding = "UTF-8";
+    }
+    
+    data->mimetype = strdup(mimetype);
+    data->encoding = strdup(encoding);
+    
+    NSString *mtype = [[NSString alloc]initWithUTF8String:mimetype];
+    NSString *enc = [[NSString alloc]initWithUTF8String:encoding];
+    NSData *ct = [NSData dataWithBytes:content length:contentlength];
+    NSURL *url;
+    if(uri) {
+        NSString *uriStr = [[NSString alloc]initWithUTF8String:uri];
+        url = [NSURL URLWithString:uriStr];
+    } else {
+        url = [NSURL URLWithString:@"file:///"];
+    }
+    [webview loadData:ct MIMEType:mtype characterEncodingName:enc baseURL:url];
+}
+
+
+void ui_webview_reload(UiGeneric *g) {
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    [webview reload];
+}
+
+UiBool ui_webview_can_go_back(UiGeneric *g) {
+    return FALSE;
+}
+
+UiBool ui_webview_can_go_forward(UiGeneric *g) {
+    return FALSE;
+}
+
+void ui_webview_go_back(UiGeneric *g) {
+    
+}
+
+void ui_webview_go_forward(UiGeneric *g) {
+    
+}
+
+const char * ui_webview_get_uri(UiGeneric *g) {
+    UiWebViewData *data = g->value;
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    
+    free(data->uri);
+    data->uri = NULL;
+    
+    NSURL *url = webview.URL;
+    if(url) {
+        NSString *s = [url absoluteString];
+        if(s) {
+            data->uri = strdup(s.UTF8String);
+        }
+    }
+    return data->uri;
+}
+
+void ui_webview_enable_javascript(UiGeneric *g, UiBool enable) {
+    // unsupported
+}
+
+void ui_webview_set_zoom(UiGeneric *g, double zoom) {
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    webview.pageZoom = zoom;
+}
+
+double ui_webview_get_zoom(UiGeneric *g) {
+    WKWebView *webview = (__bridge WKWebView*)g->obj;
+    return webview.pageZoom;
+}

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