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Annotation of modules/damieng/graphical_editor/loncapa_daxe/web/nodes/h1.dart, revision 1.1

1.1     ! damieng     1: /*
        !             2:   This file is part of LONCAPA-Daxe.
        !             3: 
        !             4:   LONCAPA-Daxe is free software: you can redistribute it and/or modify
        !             5:   it under the terms of the GNU General Public License as published by
        !             6:   the Free Software Foundation, either version 3 of the License, or
        !             7:   (at your option) any later version.
        !             8: 
        !             9:   LONCAPA-Daxe is distributed in the hope that it will be useful,
        !            10:   but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            11:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            12:   GNU General Public License for more details.
        !            13: 
        !            14:   You should have received a copy of the GNU General Public License
        !            15:   along with Daxe.  If not, see <http://www.gnu.org/licenses/>.
        !            16: */
        !            17: 
        !            18: part of loncapa_daxe;
        !            19: 
        !            20: /**
        !            21:  * Used for section's h1 (as first child).
        !            22:  * As the first child in a section, display the class icon and the title in bold.
        !            23:  */
        !            24: class H1 extends LCDBlock {
        !            25:   
        !            26:   H1.fromRef(x.Element elementRef) : super.fromRef(elementRef);
        !            27:   
        !            28:   H1.fromNode(x.Node node, DaxeNode parent) : super.fromNode(node, parent);
        !            29:   
        !            30:   @override
        !            31:   bool simpleUIPossible() {
        !            32:     if (previousSibling != null)
        !            33:       return false;
        !            34:     if (attributes.length != 0)
        !            35:       return false;
        !            36:     if (firstChild != null && firstChild is! DNText)
        !            37:       return false;
        !            38:     if (firstChild != null && firstChild.nextSibling != null)
        !            39:       return false;
        !            40:     return true;
        !            41:   }
        !            42:   
        !            43:   @override
        !            44:   h.Element html() {
        !            45:     simpleUI = parent is Section && (parent as Section).simpleUI && previousSibling == null;
        !            46:     if (!simpleUI)
        !            47:       return super.html();
        !            48:     setupRestrictions();
        !            49:     
        !            50:     h.DivElement div = new h.DivElement();
        !            51:     div.id = "$id";
        !            52:     div.classes.add('dn');
        !            53:     if (!valid)
        !            54:       div.classes.add('invalid');
        !            55:     div.classes.add('section-title');
        !            56:     setStyle(div);
        !            57:     String cl = parent.getAttribute('class');
        !            58:     if (cl != null && cl.startsWith('role-')) {
        !            59:       //TODO: provide a way to change the role
        !            60:       String role = cl.substring(5);
        !            61:       div.style.backgroundImage = 'url("images/section_icons/$role.png")';
        !            62:       div.style.backgroundRepeat = 'no-repeat';
        !            63:     }
        !            64:     if (firstChild == null) {
        !            65:       div.style.position = 'relative';
        !            66:       h.SpanElement span = new h.SpanElement();
        !            67:       span.style.position = 'absolute';
        !            68:       span.style.color = '#CCC';
        !            69:       span.appendText(LCDStrings.get('section_title'));
        !            70:       div.append(span);
        !            71:     }
        !            72:     DaxeNode dn = firstChild;
        !            73:     while (dn != null) {
        !            74:       div.append(dn.html());
        !            75:       dn = dn.nextSibling;
        !            76:     }
        !            77:     if (lastChild == null || lastChild.nodeType == DaxeNode.TEXT_NODE)
        !            78:       div.appendText('\n');
        !            79:     return(div);
        !            80:   }
        !            81:   
        !            82:   @override
        !            83:   h.Element getHTMLContentsNode() {
        !            84:     if (!simpleUI)
        !            85:       return super.getHTMLContentsNode();
        !            86:     return getHTMLNode();
        !            87:   }
        !            88:   
        !            89:   @override
        !            90:   void updateHTMLAfterChildrenChange(List<DaxeNode> changed) {
        !            91:     if (!simpleUI)
        !            92:       super.updateHTMLAfterChildrenChange(changed);
        !            93:     updateHTML();
        !            94:   }
        !            95:   
        !            96:   void setupRestrictions() {
        !            97:     attRefs = [];
        !            98:     restrictedInserts = ['m','lm','chem','num','i','sup','sub'];
        !            99:   }
        !           100:   
        !           101:   @override
        !           102:   void setupSimpleUI() {
        !           103:     simpleUI = true;
        !           104:     setupRestrictions();
        !           105:   }
        !           106:   
        !           107: }