597 lines
19 KiB
JavaScript
597 lines
19 KiB
JavaScript
function Wiki() {
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this.next_id = null;
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this.focused_editor = null;
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this.blank_editor_id = null;
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this.notebook = null;
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this.notebook_id = getElement( "notebook_id" ).value;
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this.read_write = false;
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this.startup_entries = new Array(); // map of startup entries: entry id to bool
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this.invoker = new Invoker();
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connect( this.invoker, "error_message", this, "display_message" );
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connect( "search_form", "onsubmit", this, "search" );
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// get info on the requested notebook (if any)
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var self = this;
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if ( this.notebook_id ) {
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this.invoker.invoke(
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"/notebooks/contents", "GET", {
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"notebook_id": this.notebook_id
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},
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function( result ) { self.populate( result ); }
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);
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}
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// get info on the current user (logged-in or anonymous)
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this.invoker.invoke( "/users/current", "GET", null,
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function( result ) { self.display_user( result ); }
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);
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}
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Wiki.prototype.update_next_id = function ( result ) {
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this.next_id = result.next_id;
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}
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Wiki.prototype.display_user = function ( result ) {
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// if no notebook id was requested, then just display the user's default notebook
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if ( !this.notebook_id ) {
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this.notebook_id = result.notebooks[ 0 ].object_id;
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this.populate( { "notebook" : result.notebooks[ 0 ] } );
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}
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if ( result.user.username == "anonymous" )
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return;
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// display links for current notebook a list of other notebooks that the user has access to
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var span = createDOM( "span" );
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replaceChildNodes( "notebook_area", span );
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appendChildNodes( span, createDOM( "a", { "href": "/notebooks/" + this.notebook_id, "id": "recent_entries_link" }, "recent entries" ) );
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appendChildNodes( span, createDOM( "br" ) );
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appendChildNodes( span, createDOM( "a", { "href": "/notebooks/download_html/" + this.notebook_id, "id": "download_html_link" }, "download as html" ) );
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appendChildNodes( span, createDOM( "h3", "other notebooks" ) );
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for ( var i in result.notebooks ) {
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var notebook = result.notebooks[ i ];
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if ( notebook.object_id != this.notebook_id ) {
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appendChildNodes( span, createDOM( "a", {
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"href": ( notebook.name == "Limited Medium" ) ? "/" : "/notebooks/" + notebook.object_id,
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"id": "notebook_" + notebook.object_id
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}, notebook.name ) );
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appendChildNodes( span, createDOM( "br" ) );
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}
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}
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// display the name of the logged in user and a logout link
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span = createDOM( "span" );
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replaceChildNodes( "user_area", span );
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appendChildNodes( span, "logged in as " + result.user.username );
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appendChildNodes( span, " | " );
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appendChildNodes( span, createDOM( "a", { "href": "/", "id": "logout_link" }, "logout" ) );
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var self = this;
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connect( "recent_entries_link", "onclick", function ( event ) {
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self.invoker.invoke(
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"/notebooks/recent_entries", "GET", { "notebook_id": self.notebook_id },
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function( result ) { self.display_search_results( result ); }
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);
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event.stop();
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} );
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connect( "download_html_link", "onclick", function ( event ) {
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self.save_editor( null, true );
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} );
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connect( "logout_link", "onclick", function ( event ) {
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self.save_editor( null, true );
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self.invoker.invoke( "/users/logout", "POST" );
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event.stop();
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} );
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}
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Wiki.prototype.populate = function ( result ) {
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this.notebook = result.notebook;
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var self = this;
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if ( this.notebook.name != "Limited Medium" )
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replaceChildNodes( "notebook_name", createDOM( "h3", this.notebook.name ) );
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if ( this.notebook.read_write ) {
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this.read_write = true;
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removeElementClass( "toolbar", "undisplayed" );
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connect( window, "onunload", function ( event ) { self.editor_focused( null, true ); } );
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connect( "bold", "onclick", function ( event ) { self.toggle_button( event, "bold" ); } );
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connect( "italic", "onclick", function ( event ) { self.toggle_button( event, "italic" ); } );
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connect( "title", "onclick", function ( event ) { self.toggle_button( event, "title", "h3" ); } );
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connect( "insertUnorderedList", "onclick", function ( event ) { self.toggle_button( event, "insertUnorderedList" ); } );
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connect( "insertOrderedList", "onclick", function ( event ) { self.toggle_button( event, "insertOrderedList" ); } );
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connect( "createLink", "onclick", this, "toggle_link_button" );
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connect( "newEntry", "onclick", this, "create_blank_editor" );
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connect( "html", "onclick", this, "background_clicked" );
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// grab the next available object id
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this.invoker.invoke( "/next_id", "POST", null,
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function( result ) { self.update_next_id( result ); }
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);
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}
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// create an editor for each startup entry in the received notebook, focusing the first one
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for ( var i in this.notebook.startup_entries ) {
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var entry = this.notebook.startup_entries[ i ];
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if ( !entry ) continue;
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this.startup_entries[ entry.object_id ] = true;
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var focus = ( i == 0 );
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this.create_editor( entry.object_id, entry.contents, undefined, undefined, false, focus );
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}
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}
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Wiki.prototype.background_clicked = function ( event ) {
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this.clear_pulldowns();
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// unless a background div was clicked, bail
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var node_name = event.target().nodeName.toLowerCase();
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if ( node_name != "div" && node_name != "html" )
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return;
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this.create_blank_editor( event );
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}
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Wiki.prototype.create_blank_editor = function ( event ) {
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if ( event ) event.stop();
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// if there is already a blank editor, then highlight it and bail
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if ( this.blank_editor_id != null ) {
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var blank_iframe_id = "entry_" + this.blank_editor_id;
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var iframe = getElement( blank_iframe_id );
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if ( iframe && iframe.editor.empty() ) {
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iframe.editor.highlight();
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return;
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}
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}
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this.blank_editor_id = this.create_editor( undefined, undefined, undefined, undefined, true, true );
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}
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Wiki.prototype.load_editor = function ( entry_title, insert_after_iframe_id, entry_id ) {
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var self = this;
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this.invoker.invoke(
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"/notebooks/load_entry", "GET", {
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"notebook_id": this.notebook_id,
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"entry_id": entry_id
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},
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function ( result ) { self.parse_loaded_editor( result, insert_after_iframe_id, entry_title ); }
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);
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}
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Wiki.prototype.load_editor_by_title = function ( entry_title, insert_after_iframe_id ) {
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var self = this;
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this.invoker.invoke(
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"/notebooks/load_entry_by_title", "GET", {
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"notebook_id": this.notebook_id,
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"entry_title": entry_title
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},
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function ( result ) { self.parse_loaded_editor( result, insert_after_iframe_id, entry_title ); }
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);
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}
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Wiki.prototype.parse_loaded_editor = function ( result, insert_after_iframe_id, entry_title ) {
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if ( result.entry ) {
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var id = result.entry.object_id
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var entry_text = result.entry.contents;
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} else {
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var id = null;
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var entry_text = "<h3>" + entry_title;
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}
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this.create_editor( id, entry_text, insert_after_iframe_id, entry_title, true, false );
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}
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Wiki.prototype.create_editor = function ( id, entry_text, insert_after_iframe_id, entry_title, highlight, focus ) {
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this.clear_messages();
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this.clear_pulldowns();
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var self = this;
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if ( isUndefinedOrNull( id ) ) {
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if ( this.read_write ) {
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id = this.next_id;
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this.invoker.invoke( "/next_id", "POST", null,
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function( result ) { self.update_next_id( result ); }
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);
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} else {
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id = 0;
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}
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}
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// update any matching links in insert_after_iframe_id with the id of this new editor
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if ( insert_after_iframe_id ) {
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var links = getElementsByTagAndClassName( "a", null, getElement( insert_after_iframe_id ).editor.document );
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for ( var i in links ) {
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// a link matches if its contained text is the same as this entry's title
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if ( scrapeText( links[ i ] ) == entry_title )
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links[ i ].href = "/entries/" + id;
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}
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}
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// if an iframe has been given to insert this new editor after, then hide all subsequent non-startup editors
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if ( insert_after_iframe_id ) {
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var sibling = getElement( insert_after_iframe_id ).nextSibling;
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while ( sibling ) {
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var nextSibling = sibling.nextSibling;
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if ( sibling.editor && ( this.read_write || !sibling.editor.startup ) )
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sibling.editor.shutdown();
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sibling = nextSibling;
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}
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}
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var startup = this.startup_entries[ id ];
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var editor = new Editor( id, entry_text, undefined, this.read_write, startup, highlight, focus );
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if ( this.read_write ) {
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connect( editor, "state_changed", this, "editor_state_changed" );
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connect( editor, "key_pressed", this, "editor_key_pressed" );
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connect( editor, "delete_clicked", function ( event ) { self.delete_editor( event, editor ) } );
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connect( editor, "options_clicked", function ( event ) { self.toggle_editor_options( event, editor ) } );
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connect( editor, "focused", this, "editor_focused" );
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}
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connect( editor, "load_editor", this, "load_editor" );
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connect( editor, "load_editor_by_title", this, "load_editor_by_title" );
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connect( editor, "hide_clicked", function ( event ) { self.hide_editor( event, editor ) } );
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connect( editor, "submit_form", function ( url, form ) {
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self.invoker.invoke( url, "POST", null, null, form );
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} );
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return id;
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}
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Wiki.prototype.editor_state_changed = function ( editor ) {
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this.update_toolbar();
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}
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Wiki.prototype.editor_focused = function ( editor, fire_and_forget ) {
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this.clear_messages();
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this.clear_pulldowns();
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if ( editor )
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addElementClass( editor.iframe, "focused_entry_frame" );
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if ( this.focused_editor && this.focused_editor != editor ) {
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removeElementClass( this.focused_editor.iframe, "focused_entry_frame" );
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// if the formerly focused editor is completely empty, then remove it as the user leaves it and switches to this editor
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if ( this.focused_editor.empty() ) {
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this.focused_editor.shutdown();
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} else {
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// when switching editors, save the one being left
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this.save_editor( null, fire_and_forget );
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}
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}
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this.focused_editor = editor;
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}
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Wiki.prototype.editor_key_pressed = function ( editor, event ) {
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var code = event.key().code;
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if ( event.modifier().ctrl ) {
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// ctrl-backtick: alert with frame HTML contents (temporary for debugging)
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if ( code == 192 || code == 96 ) {
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alert( editor.document.body.innerHTML );
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event.stop();
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// ctrl-b: bold
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} else if ( code == 66 ) {
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this.toggle_button( event, "bold" );
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// ctrl-i: italic
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} else if ( code == 73 ) {
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this.toggle_button( event, "italic" );
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// ctrl-t: title
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} else if ( code == 84 ) {
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this.toggle_button( event, "title", "h3" );
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// ctrl-l: unordered list
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} else if ( code == 76 ) {
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this.toggle_button( event, "insertUnorderedList" );
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// ctrl-n: ordered list
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} else if ( code == 49 ) {
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this.toggle_button( event, "insertOrderedList" );
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// ctrl-e: make an entry link
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} else if ( code == 69 ) {
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this.toggle_link_button( event );
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// ctrl-n: new entry
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} else if ( code == 78 ) {
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this.create_blank_editor( event );
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// ctrl-h: hide entry
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} else if ( code == 72 ) {
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this.hide_editor( event );
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// ctrl-d: delete entry
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} else if ( code == 68 ) {
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this.delete_editor( event );
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}
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// IE: hitting space or tab while making a link shouldn't end the link
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} else if ( ( code == 32 || code == 9 ) && editor.document.selection && editor.state_enabled( "createLink" ) ) {
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var range = editor.document.selection.createRange();
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var text = range.parentElement().firstChild;
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text.nodeValue += " ";
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event.stop();
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}
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}
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Wiki.prototype.toggle_button = function ( event, button_id, state_name ) {
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this.clear_messages();
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this.clear_pulldowns();
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if ( this.focused_editor ) {
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this.focused_editor.focus();
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this.focused_editor.exec_command( state_name || button_id );
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this.focused_editor.resize();
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this.update_button( button_id, state_name );
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}
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event.stop();
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}
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Wiki.prototype.update_button = function ( button_id, state_name ) {
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if ( this.focused_editor.state_enabled( state_name || button_id ) )
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addElementClass( button_id, "button_down" );
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else
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removeElementClass( button_id, "button_down" );
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}
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Wiki.prototype.update_toolbar = function() {
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if ( this.focused_editor ) {
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this.update_button( "bold" );
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this.update_button( "italic" );
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this.update_button( "title", "h3" );
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this.update_button( "insertUnorderedList" );
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this.update_button( "insertOrderedList" );
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this.update_button( "createLink" );
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}
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}
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Wiki.prototype.toggle_link_button = function ( event ) {
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this.clear_messages();
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this.clear_pulldowns();
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if ( this.focused_editor ) {
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this.focused_editor.focus();
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toggleElementClass( "button_down", "createLink" );
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if ( hasElementClass( "createLink", "button_down" ) )
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this.focused_editor.start_link();
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else
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this.focused_editor.end_link();
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}
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event.stop();
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}
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Wiki.prototype.hide_editor = function ( event, editor ) {
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this.clear_messages();
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this.clear_pulldowns();
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if ( !editor ) {
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editor = this.focused_editor;
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this.focused_editor = null;
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}
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if ( editor ) {
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// before hiding an editor, save it
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if ( this.read_write )
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this.save_editor( editor );
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editor.shutdown();
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}
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event.stop();
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}
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Wiki.prototype.delete_editor = function ( event, editor ) {
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this.clear_messages();
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this.clear_pulldowns();
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if ( !editor ) {
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editor = this.focused_editor;
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this.focused_editor = null;
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}
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if ( editor ) {
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if ( this.startup_entries[ editor.id ] )
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delete this.startup_entries[ editor.id ];
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if ( this.read_write ) {
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this.invoker.invoke( "/notebooks/delete_entry", "POST", {
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"notebook_id": this.notebook_id,
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"entry_id": editor.id
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} );
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}
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if ( editor == this.focused_editor )
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this.focused_editor = null;
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editor.shutdown();
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}
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event.stop();
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}
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Wiki.prototype.save_editor = function ( editor, fire_and_forget ) {
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if ( !editor )
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editor = this.focused_editor;
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if ( editor && !editor.empty() ) {
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// TODO: do something with the result other than just ignoring it
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this.invoker.invoke( "/notebooks/save_entry", "POST", {
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"notebook_id": this.notebook_id,
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"entry_id": editor.id,
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"contents": editor.contents(),
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"startup": editor.startup
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}, null, null, fire_and_forget );
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}
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}
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Wiki.prototype.search = function ( event ) {
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this.clear_messages();
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this.clear_pulldowns();
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var self = this;
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this.invoker.invoke( "/notebooks/search", "GET", { "notebook_id": this.notebook_id },
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function( result ) { self.display_search_results( result ); },
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"search_form"
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);
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event.stop();
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}
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Wiki.prototype.display_search_results = function ( result ) {
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// before displaying the search results, save the current focused editor
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this.save_editor();
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// TODO: somehow highlight the search term within the search results?
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// make a map of entry object id to entry
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var entries = {};
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for ( var i in result.entries ) {
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var entry = result.entries[ i ];
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entries[ entry.object_id ] = entry;
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}
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// hide all existing editors except those for startup entries or search results
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var iframes = getElementsByTagAndClassName( "iframe", "entry_frame" );
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for ( var i in iframes ) {
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var iframe = iframes[ i ];
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// don't hide an existing entry if it's in the search results
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if ( entries[ iframe.editor.id ] ) {
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iframe.editor.highlight( false );
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delete entries[ iframe.editor.id ];
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continue;
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}
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// don't hide an existing entry if it's a read-only startup entry
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if ( iframe.editor.startup && !iframe.editor.read_write )
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continue;
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iframe.editor.shutdown();
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}
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// if there are no search results, indicate that and bail
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if ( result.entries.length == 0 ) {
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this.display_message( "No matching entries." );
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return;
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}
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// create an editor for each entry search result, focusing the first one
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var i = 0;
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for ( var id in entries ) {
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var entry = entries[ id ];
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var focus = ( i == 0 );
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this.create_editor( id, entry.contents, undefined, undefined, false, focus );
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i += 1;
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}
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}
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Wiki.prototype.display_message = function ( text ) {
|
|
this.clear_messages();
|
|
this.clear_pulldowns();
|
|
|
|
var inner_div = DIV( { "class": "message_inner" }, text );
|
|
var div = DIV( { "class": "message" }, inner_div );
|
|
appendChildNodes( "entries", div );
|
|
ScrollTo( div );
|
|
}
|
|
|
|
Wiki.prototype.clear_messages = function () {
|
|
var results = getElementsByTagAndClassName( "div", "message" );
|
|
|
|
for ( var i in results ) {
|
|
var result = results[ i ];
|
|
blindUp( result, options = { "duration": 0.5, afterFinish: function () {
|
|
try {
|
|
removeElement( result );
|
|
} catch ( e ) { }
|
|
} } );
|
|
}
|
|
}
|
|
|
|
Wiki.prototype.clear_pulldowns = function () {
|
|
var results = getElementsByTagAndClassName( "div", "pulldown" );
|
|
|
|
for ( var i in results ) {
|
|
var result = results[ i ];
|
|
result.pulldown.shutdown();
|
|
}
|
|
}
|
|
|
|
Wiki.prototype.toggle_editor_options = function ( event, editor ) {
|
|
new Pulldown( this.notebook_id, this.invoker, editor );
|
|
event.stop();
|
|
}
|
|
|
|
connect( window, "onload", function ( event ) { new Wiki(); } );
|
|
|
|
|
|
function Pulldown( notebook_id, invoker, editor ) {
|
|
// if the pulldown is already open, then just close it
|
|
var existing_div = getElement( "options_" + editor.id );
|
|
if ( existing_div ) {
|
|
existing_div.pulldown.shutdown();
|
|
return;
|
|
}
|
|
|
|
this.notebook_id = notebook_id;
|
|
this.invoker = invoker;
|
|
this.editor = editor;
|
|
this.div = createDOM( "div", { "id": "options_" + editor.id, "class": "pulldown" } );
|
|
this.div.pulldown = this;
|
|
addElementClass( this.div, "invisible" );
|
|
|
|
this.close_button = createDOM( "input", { "type": "button", "value": " x ", "class": "pulldown_button" } );
|
|
this.startup_checkbox = createDOM( "input", { "type": "checkbox" } );
|
|
this.startup_toggle = createDOM( "span", { "class": "pulldown_toggle" },
|
|
this.startup_checkbox,
|
|
"show on startup"
|
|
);
|
|
|
|
appendChildNodes( this.div, this.close_button );
|
|
appendChildNodes( this.div, this.startup_toggle );
|
|
appendChildNodes( document.body, this.div );
|
|
this.startup_checkbox.checked = editor.startup;
|
|
|
|
var self = this;
|
|
connect( this.startup_toggle, "onclick", function ( event ) { self.startup_clicked( event ); event.stop(); } );
|
|
connect( this.close_button, "onclick", function ( event ) { self.shutdown(); event.stop(); } );
|
|
|
|
// position the options pulldown under the options button
|
|
var position = getElementPosition( editor.options_button );
|
|
var options_dimensions = getElementDimensions( editor.options_button );
|
|
var div_dimensions = getElementDimensions( this.div );
|
|
position.x -= div_dimensions.w - options_dimensions.w;
|
|
position.y += options_dimensions.h;
|
|
setElementPosition( this.div, position );
|
|
|
|
removeElementClass( this.div, "invisible" );
|
|
}
|
|
|
|
Pulldown.prototype.startup_clicked = function ( event ) {
|
|
if ( event.target() != this.startup_checkbox )
|
|
this.startup_checkbox.checked = this.startup_checkbox.checked ? false : true;
|
|
this.editor.startup = this.startup_checkbox.checked;
|
|
|
|
// if this entry isn't empty, save it along with its startup status
|
|
if ( !this.editor.empty() ) {
|
|
this.invoker.invoke( "/notebooks/save_entry", "POST", {
|
|
"notebook_id": this.notebook_id,
|
|
"entry_id": this.editor.id,
|
|
"contents": this.editor.contents(),
|
|
"startup": this.editor.startup
|
|
} );
|
|
}
|
|
}
|
|
|
|
Pulldown.prototype.shutdown = function () {
|
|
disconnectAll( this.close_button );
|
|
disconnectAll( this.startup_toggle );
|
|
removeElement( this.div );
|
|
}
|