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Fixes gohugoio#2683 See gohugoio#2535
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| // Copyright 2016-present The Hugo Authors. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package hugolib | ||
|
|
||
| import ( | ||
| "github.com/spf13/cast" | ||
| "html/template" | ||
|
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| jww "github.com/spf13/jwalterweatherman" | ||
| "github.com/spf13/viper" | ||
| ) | ||
|
|
||
| // TODO See the shortcode system to see the structure | ||
|
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| // Data structures and methods | ||
| // =========================== | ||
|
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| // A WidgetEntry represents a widget item defined | ||
| // in the site config. | ||
| // (TODO: See hugolib/menu.go for the data structure) | ||
| type Widget struct { | ||
| Type string | ||
| Params map[string]interface{} | ||
| Identifier string | ||
| Weight int | ||
| Template *template.Template | ||
| } | ||
|
|
||
| func newWidget(widgetType string, options interface{}) (*Widget, error) { | ||
| return &Widget{Type: widgetType, Params: options.(map[string]interface{})}, nil | ||
| } | ||
|
|
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| type WidgetArea struct { | ||
| Name string | ||
| Widgets []*Widget | ||
| Template *template.Template | ||
| } | ||
|
|
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| func newWidgetArea(waname string) *WidgetArea { | ||
| // TODO ?? | ||
| return &WidgetArea{Name: waname, Widgets: nil, Template: nil} | ||
| } | ||
|
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| type Widgets map[string]*WidgetArea | ||
|
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| // Internal widgets building | ||
| // ========================= | ||
|
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| // WidgetsConfig parses the widgets config variable | ||
| // (is a collection) and calls every widget configuration. | ||
| func getWidgetsFromConfig() Widgets { | ||
| ret := Widgets{} | ||
|
|
||
| if conf := viper.GetStringMap("widgets"); conf != nil { | ||
| for waname, widgetarea := range conf { | ||
| // wa is a widget area defined in the conf file | ||
| wa, err := cast.ToSliceE(widgetarea) | ||
| if err != nil { | ||
| jww.ERROR.Printf("unable to process widgets in site config\n") | ||
| jww.ERROR.Println(err) | ||
| } | ||
|
|
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| // Instantiate a WidgetArea | ||
| waobj := newWidgetArea(waname) | ||
|
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| // Retrieve all widgets | ||
| for _, w := range wa { | ||
| iw, err := cast.ToStringMapE(w) | ||
|
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| if err != nil { | ||
| jww.ERROR.Printf("unable to process widget inside widget area in site config\n") | ||
| jww.ERROR.Println(err) | ||
| } | ||
|
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| // iw represents a widget inside a widget area | ||
| wtype := cast.ToString(iw["type"]) | ||
| woptions, err := cast.ToStringMapE(iw["options"]) | ||
| wobj, err := newWidget(wtype, woptions) | ||
|
|
||
| if err != nil { | ||
| jww.ERROR.Printf("unable to instantiate widget: %s\n", iw) | ||
| jww.ERROR.Println(err) | ||
| } | ||
|
|
||
| // then append it to the widget area object | ||
| waobj.Widgets = append(waobj.Widgets, wobj) | ||
| } | ||
|
|
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| // don't forget to append that widget area to the | ||
| // Widgets object | ||
| ret[waname] = waobj | ||
| } | ||
| } | ||
|
|
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| return ret | ||
| } | ||
|
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| // instantiateWidget retrieves the widget's files | ||
| // and creates the templates | ||
| func instantiateWidget(s *Site, wa *WidgetArea, w *Widget) *Widget { | ||
| // Load this widget's templates | ||
| // using the site object's owner.tmpl | ||
| s.owner.tmpl.LoadTemplatesWithPrefix(s.absWidgetDir()+"/"+w.Type+"/layouts", "widgets/"+w.Type) | ||
|
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| return w | ||
| } | ||
|
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| // Main widgets entry point | ||
| // ======================== | ||
|
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| // This function adds the whole widgets' template code | ||
| // in the Site object. This is of type template.HTML. | ||
| // This function is called from hugo_sites. | ||
| func injectWidgets(s *Site) error { | ||
| // Get widgets. This gives all information we need but | ||
| // does not already read widget files. | ||
| widgets := getWidgetsFromConfig() | ||
|
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| for _, widgetarea := range widgets { | ||
| // _ is waname, if ever we need | ||
|
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| for _, w := range widgetarea.Widgets { | ||
| w = instantiateWidget(s, widgetarea, w) | ||
| } | ||
| } | ||
|
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| // We now have all widgets with their templates. | ||
| // Generate all widget areas with their templates | ||
| // Now the template's content will be used inside | ||
| // the main template files inside tpl/template_funcs | ||
| // and in the templates using {{ widgets "mywidgetarea" }} | ||
| s.Widgets = widgets | ||
|
|
||
| return nil | ||
| } |
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