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//! Utilities for generating html (or other DOM) strings //! //! # Example //! //! A simple html page can be created by following codes: //! //! ``` //! use dom_renderer::*; //! //! let html = html_basic!( //! title: "Page Title", //! body: //! end_elem!("h1"; "Section"), //! end_elem!("p"; "Text goes here..."), //! ); //! assert_eq!(r#"<!DOCTYPE html><html><head><meta charset="utf-8"><title>Page Title</title></head><body><h1>Section</h1><p>Text goes here...</p></body></html>"#, html.render()); //! //! let th = elem!("tr"; //! end_elem!("th"; "Item1"), //! end_elem!("th"; "Item2"), //! end_elem!("th"; "Item3"), //! ); //! let tr1 = elem!("tr"; //! end_elem!("td"; "value 11"), //! end_elem!("td"; "value 12"), //! end_elem!("td"; "value 13"), //! ); //! let tr2 = elem!("tr"; //! end_elem!("td"; "value 21"), //! end_elem!("td"; "value 22"), //! end_elem!("td"; "value 23"), //! ); //! let tbl = elem!("table"; ("border", "1"); th, tr1, tr2); //! assert_eq!(r#"<table border="1"><tr><th>Item1</th><th>Item2</th><th>Item3</th></tr><tr><td>value 11</td><td>value 12</td><td>value 13</td></tr><tr><td>value 21</td><td>value 22</td><td>value 23</td></tr></table>"#, tbl.render()); //! ``` //! //! DOM Nodes are represented by `enum DomNode`, which can be created by macros. //! //! Child nodes can be changed using as_XXX() methods. //! //! ``` //! use dom_renderer::*; //! //! # fn test() -> Option<()> { //! let mut tbl = elem!("table"); //! let tbl_elem = tbl.as_elem_mut()?; //! tbl_elem.attributes.push(("border", String::from("1"))); //! // header //! let mut tr = elem!("tr"); //! let headers = (1..=3) //! .map(|i| format!("Item{}", i)) //! .map(|x| end_elem!("th"; x)) //! .collect(); //! tr.as_elem_mut()?.child_nodes = headers; //! tbl_elem.child_nodes.push(tr); //! // data //! for i in 1..=2 { //! let mut tr = elem!("tr"); //! let data = (1..=3) //! .map(|j| format!("value {}{}", i, j)) //! .map(|x| end_elem!("td"; x)) //! .collect(); //! tr.as_elem_mut()?.child_nodes = data; //! tbl_elem.child_nodes.push(tr); //! } //! assert_eq!(r#"<table border="1"><tr><th>Item1</th><th>Item2</th><th>Item3</th></tr><tr><td>value 11</td><td>value 12</td><td>value 13</td></tr><tr><td>value 21</td><td>value 22</td><td>value 23</td></tr></table>"#, tbl.render()); //! # Some(()) //! # } //! ``` //! pub mod doc_type; pub mod document; pub mod element; pub mod macros; pub use doc_type::DomDocType; pub use document::DomDocument; pub use element::{DomElem, DomEmptyElem}; pub use macros::*; /// Render recursive elements to String instance pub trait Render { fn render(&self) -> String; } /// Node types /// /// # Macros /// Each variant can be created by the corresponding macro. /// - `Document`: `domdoc!` /// - `DocumentType`: `doctype!` /// - `EmptyElement`: `empty!` /// - `Element`: `elem!`, `end_elem!` /// - `Text`: `domtxt!` #[derive(Debug, Clone)] pub enum DomNode { Document(DomDocument), DocumentType(DomDocType), EmptyElement(DomEmptyElem), Element(DomElem), Text(String), } pub use DomNode::*; impl Render for DomNode { fn render(&self) -> String { match self { Document(n) => n.render(), DocumentType(n) => n.render(), EmptyElement(n) => n.render(), Element(n) => n.render(), Text(n) => n.clone(), } } } impl DomNode { pub fn as_doc(&self) -> Option<&DomDocument> { match *self { Document(ref e) => Some(e), _ => None, } } pub fn as_doc_mut(&mut self) -> Option<&mut DomDocument> { match *self { Document(ref mut e) => Some(e), _ => None, } } pub fn as_doctype(&self) -> Option<&DomDocType> { match *self { DocumentType(ref e) => Some(e), _ => None, } } pub fn as_doctype_mut(&mut self) -> Option<&mut DomDocType> { match *self { DocumentType(ref mut e) => Some(e), _ => None, } } pub fn as_empty(&self) -> Option<&DomEmptyElem> { match *self { EmptyElement(ref e) => Some(e), _ => None, } } pub fn as_empty_mut(&mut self) -> Option<&mut DomEmptyElem> { match *self { EmptyElement(ref mut e) => Some(e), _ => None, } } pub fn as_elem(&self) -> Option<&DomElem> { match *self { Element(ref e) => Some(e), _ => None, } } pub fn as_elem_mut(&mut self) -> Option<&mut DomElem> { match *self { Element(ref mut e) => Some(e), _ => None, } } pub fn as_text(&self) -> Option<&String> { match *self { Text(ref e) => Some(e), _ => None, } } pub fn as_text_mut(&mut self) -> Option<&mut String> { match *self { Text(ref mut e) => Some(e), _ => None, } } }