在Scope中利用Comment-input来列举我们的评论

$ git clone https://github.com/liu-xiao-guo/scopetemplates_rating_input[/code] 
在我们的代码中，我们添加如下的东西：

query.cpp
void Query::pushResult(sc::SearchReplyProxy const& reply,
const string renderer, int i) {
stringstream ss;
ss << i;
string str = ss.str();

auto cat = reply->register_category( "id" + str, "Template " + str ,
"", sc::CategoryRenderer(renderer) );
sc::CategorisedResult r(cat);
r.set_uri( URI.toStdString() );
r.set_art( images_[0].toStdString() );
//    r.set_art("http://api.map.baidu.com/images/weather/night/leizhenyu.png");
r["subtitle"] = "Subtitle " + str;
r.set_title("Title " + str);
r["summary"] = "Summary: " + str;
r["fulldesc"] = "fulldesc: " + str;
r["mascot"] = icons_[0].toStdString();
r["emblem"] = icons_[1].toStdString();
r["background"] = background_.toStdString();
r["overlay-color"] = "#FF0000";

r["comment_icon"] = icons_[3].toStdString();

QString likes = QString("%1 %2").arg(qstr(u8"\u261d "), "100");
QString views = QString("%1 %2").arg(qstr(u8"   \u261f "), "99");
std::string both = qstr("%1 %2").arg(likes,views).toStdString();
sc::VariantBuilder builder;
builder.add_tuple({
{"value", Variant(both)}
});
builder.add_tuple({
{"value", Variant("")}
});
r["attributes"] = builder.end();

r["musicSource"] = "http://qqmp3.djwma.com/mp3/魔音神据极品私货这锯子拉的耳膜都要碎了.mp3";
r["videoSource"] = "http://techslides.com/demos/sample-videos/small.mp4";
r["screenshot"] = icons_[2].toStdString();

// add an array to show the gallary of it
sc::VariantArray arr;

for(const auto &datum : icons_) {
arr.push_back(Variant(datum.toStdString()));
}

r["array"] = sc::Variant(arr);

if (!reply->push(r))
return;
}


在上面，我们加入了：

r["comment_icon"] = icons_[3].toStdString();


这是我们需要显示Comment时最左边的图标．

preview.cpp
void Preview::run(sc::PreviewReplyProxy const& reply) {
// Support three different column layouts

ColumnLayout layout1col(1);
std::vector<std::string> ids = { "image", "header", "summary", "tracks",
"videos", "gallery_header", "gallerys", "reviews", "exp",
"review_input", "rating_input", "inputId" };

ColumnLayout layout2col(2);
layout2col.add_column(ids);
layout2col.add_column({});

ColumnLayout layout3col(3);
layout3col.add_column(ids);
layout3col.add_column({});
layout3col.add_column({});

// Define the header section
sc::PreviewWidget header("header", "header");
// It has title and a subtitle properties
header.add_attribute_mapping("title", "title");
header.add_attribute_mapping("subtitle", "subtitle");

// Define the image section
sc::PreviewWidget image("image", "image");
// It has a single source property, mapped to the result's art property
image.add_attribute_mapping("source", "art");

// Define the summary section
sc::PreviewWidget description("summary", "text");
// It has a text property, mapped to the result's description property
description.add_attribute_mapping("text", "description");

Result result = PreviewQueryBase::result();
PreviewWidget listen("tracks", "audio");
{
VariantBuilder builder;
builder.add_tuple({
{"title", Variant("This is the song title")},
{"source", Variant(result["musicSource"].get_string().c_str())}
});
listen.add_attribute_value("tracks", builder.end());
}

PreviewWidget video("videos", "video");
video.add_attribute_value("source", Variant(result["videoSource"].get_string().c_str()));
video.add_attribute_value("screenshot", Variant(result["screenshot"].get_string().c_str()));

sc::PreviewWidget header_gal("gallery_header", "header");
header_gal.add_attribute_value("title", Variant("Gallery files are:"));

PreviewWidget gallery("gallerys", "gallery");
//    gallery.add_attribute_value("sources", Variant(result["array"]));
gallery.add_attribute_mapping("sources", "array");

PreviewWidgetList widgets({ image, header, description });

if ( result["musicSource"].get_string().length() != 0 ) {
widgets.emplace_back(listen);
}

if( result["videoSource"].get_string().length() != 0 ) {
widgets.emplace_back(video);
}

if( result["array"].get_array().size() != 0 ) {
widgets.emplace_back(header_gal);
widgets.emplace_back(gallery);
}

// The following shows the review
PreviewWidget review("reviews", "reviews");
VariantBuilder builder;
builder.add_tuple({
{"author", Variant("John Doe")},
{"review", Variant("very good")},
{"rating", Variant(3.5)}
});
builder.add_tuple({
{"author", Variant("Mr. Smith")},
{"review", Variant("very poor")},
{"rating", Variant(5)}
});
review.add_attribute_value("reviews", builder.end());
widgets.emplace_back(review);

// The following shows the expandable
PreviewWidget expandable("exp", "expandable");
expandable.add_attribute_value("title", Variant("This is an expandable widget"));
expandable.add_attribute_value("collapsed-widgets", Variant(1));
PreviewWidget w1("w1", "text");
w1.add_attribute_value("title", Variant("Subwidget 1"));
w1.add_attribute_value("text", Variant("A text"));
PreviewWidget w2("w2", "text");
w2.add_attribute_value("title", Variant("Subwidget 2"));
w2.add_attribute_value("text", Variant("A text"));
expandable.add_widget(w1);
expandable.add_widget(w2);
widgets.emplace_back(expandable);

// The following shows a review rating-input
PreviewWidget w_review("review_input", "rating-input");
w_review.add_attribute_value("submit-label", Variant("Send"));
w_review.add_attribute_value("visible", Variant("review"));
w_review.add_attribute_value("required", Variant("review"));
std::string reply_label = "Reply";
std::string max_chars_label = "140 characters max";
w_review.add_attribute_value("review-label", Variant(reply_label + ": " + max_chars_label));
widgets.emplace_back(w_review);

// The follwing shows a rating rating-input
PreviewWidget w_rating("rating_input", "rating-input");
w_rating.add_attribute_value("visible", Variant("rating"));
w_rating.add_attribute_value("required", Variant("rating"));
w_rating.add_attribute_value("rating-label", Variant("Please rate this"));
widgets.emplace_back(w_rating);

PreviewWidget w_commentInput("inputId", "comment-input");
w_commentInput.add_attribute_value("submit-label", Variant("Post"));
widgets.emplace_back(w_commentInput);

// In the following, fake some comments data
QList<Comment> comment_list;
std::string comment_str = "Comment ";
for(int i = 0; i < 3;  i++) {
Comment comment;

comment.id         = 1.0;
comment.publishTime = "2015-3-18";
comment.text = comment_str;
comment.text += std::to_string(i+1);
comment_list.append(comment);
}

int index = 0;
Q_FOREACH(const auto & comment, comment_list) {
std::string id = "commentId_" + std::to_string(index++);
ids.emplace_back(id);

PreviewWidget w_comment(id, "comment");
w_comment.add_attribute_value("comment", Variant(comment.text));
w_comment.add_attribute_value("author", Variant("Author"));
w_comment.add_attribute_value("source", Variant(result["comment_icon"].get_string().c_str()));
w_comment.add_attribute_value("subtitle", Variant(comment.publishTime));
widgets.emplace_back(w_comment);
}

layout1col.add_column(ids);
reply->register_layout({layout1col, layout2col, layout3col});
reply->push( widgets );
}


在上面的函数中，我们加入了如下的代码：

PreviewWidget w_commentInput("inputId", "comment-input");
w_commentInput.add_attribute_value("submit-label", Variant("Post"));
widgets.emplace_back(w_commentInput);

// In the following, fake some comments data
QList<Comment> comment_list;
std::string comment_str = "Comment ";
for(int i = 0; i < 3;  i++) {
Comment comment;

comment.id         = 1.0;
comment.publishTime = "2015-3-18";
comment.text = comment_str;
comment.text += std::to_string(i+1);
comment_list.append(comment);
}

int index = 0;
Q_FOREACH(const auto & comment, comment_list) {
std::string id = "commentId_" + std::to_string(index++);
ids.emplace_back(id);

PreviewWidget w_comment(id, "comment");
w_comment.add_attribute_value("comment", Variant(comment.text));
w_comment.add_attribute_value("author", Variant("Author"));
w_comment.add_attribute_value("source", Variant(result["comment_icon"].get_string().c_str()));
w_comment.add_attribute_value("subtitle", Variant(comment.publishTime));
widgets.emplace_back(w_comment);
}

layout1col.add_column(ids);


在上面我们创建了一个叫做comment-input的PreviewWidget．同时，我们在显示每项comment时，使用了一个叫做comment的PreviewWidget．由于没有online数据，我们自己创建了一下fake的数据．运行我们的Scope，我们可以看到结果就像我们上面图显示的那样．

注意在上面的实现中，我们必须动态地添加每个创建的comment PreviewWidget，所以，有上面的语句：

layout1col.add_column(ids);


整个项目的源码在：https://github.com/liu-xiao-guo/scopetemplates_comment_input