feat: support set theme static source path type. (#535)

* feat: support set theme static source path type.

* refactor: global_absolute_path_enabled property.

src/main/java/run/halo/app/listener/freemarker/FreemarkerConfigAwareListener.java

@@ -12,6 +12,7 @@ import run.halo.app.event.options.OptionUpdatedEvent;
 import run.halo.app.event.theme.ThemeActivatedEvent;
 import run.halo.app.event.user.UserUpdatedEvent;
 import run.halo.app.handler.theme.config.support.ThemeProperty;
+import run.halo.app.model.properties.OtherProperties;
 import run.halo.app.model.support.HaloConst;
 import run.halo.app.service.OptionService;
 import run.halo.app.service.ThemeService;
@@ -96,9 +97,14 @@ public class FreemarkerConfigAwareListener {
     }
 
     private void loadThemeConfig() throws TemplateModelException {
+
+        // Get current activated theme.
         ThemeProperty activatedTheme = themeService.getActivatedTheme();
+
+        Boolean enabledAbsolutePath = optionService.getByPropertyOrDefault(OtherProperties.GLOBAL_ABSOLUTE_PATH_ENABLED, Boolean.class, true);
+
         configuration.setSharedVariable("theme", activatedTheme);
-        configuration.setSharedVariable("static", optionService.getBlogBaseUrl() + "/" + activatedTheme.getFolderName());
+        configuration.setSharedVariable("static", (enabledAbsolutePath ? optionService.getBlogBaseUrl() : "") + "/" + activatedTheme.getFolderName());
         configuration.setSharedVariable("settings", themeSettingService.listAsMapBy(themeService.getActivatedThemeId()));
         log.debug("Loaded theme and settings");
     }

src/main/java/run/halo/app/model/enums/GlobalPathType.java

@@ -0,0 +1,31 @@
+package run.halo.app.model.enums;
+
+/**
+ * Global path type.
+ *
+ * @author ryanwang
+ * @date 2020-02-01
+ */
+public enum GlobalPathType implements ValueEnum<Integer> {
+
+    /**
+     * Relative path.
+     */
+    RELATIVE(0),
+
+    /**
+     * Absolute path.
+     */
+    ABSOLUTE(1);
+
+    private Integer value;
+
+    GlobalPathType(Integer value) {
+        this.value = value;
+    }
+
+    @Override
+    public Integer getValue() {
+        return value;
+    }
+}

src/main/java/run/halo/app/model/properties/OtherProperties.java

@@ -22,7 +22,12 @@ public enum OtherProperties implements PropertyEnum {
     /**
      * Statistics platform code,such as Google Analytics.
      */
-    STATISTICS_CODE("blog_statistics_code", String.class, "");
+    STATISTICS_CODE("blog_statistics_code", String.class, ""),
+
+    /**
+     * Global absolute path enabled.
+     */
+    GLOBAL_ABSOLUTE_PATH_ENABLED("global_absolute_path_enabled", Boolean.class, "true");
 
     private final String value;