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Annotation of modules/damieng/graphical_editor/loncapa_daxe/web/nodes/textfield.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:  * Display for the textfield element, for simple UI (some attributes are displayed like attributes of the parent).
        !            22:  * Jaxe display type: 'textfield'.
        !            23:  */
        !            24: class Textfield extends LCDBlock {
        !            25:   
        !            26:   static List<String> simpleUIAttributes = ['spellcheck', 'rows', 'cols'];
        !            27:   
        !            28:   Textfield.fromRef(x.Element elementRef) : super.fromRef(elementRef);
        !            29:   
        !            30:   Textfield.fromNode(x.Node node, DaxeNode parent) : super.fromNode(node, parent) {
        !            31:     if (simpleParent())
        !            32:       simpleUI = true;
        !            33:   }
        !            34:   
        !            35:   @override
        !            36:   bool simpleUIPossible() {
        !            37:     if (attributes.length != 0) {
        !            38:       // accept any spellcheck, rows, columns, but no addchars
        !            39:       for (DaxeAttr att in attributes) {
        !            40:         if (!simpleUIAttributes.contains(att.name)) {
        !            41:           throw new SimpleUIException('textfield: ' + LCDStrings.get('attribute_problem') + att.name);
        !            42:         }
        !            43:       }
        !            44:     }
        !            45:     if (firstChild != null)
        !            46:       return false;
        !            47:     return true;
        !            48:   }
        !            49:   
        !            50:   bool simpleParent() {
        !            51:     return (parent is LCDBlock && (parent as LCDBlock).simpleUI) &&
        !            52:         (parent is EssayResponse);
        !            53:   }
        !            54:   
        !            55:   @override
        !            56:   h.Element html() {
        !            57:     simpleUI = simpleParent();
        !            58:     if (!simpleUI)
        !            59:       return super.html();
        !            60:     
        !            61:     // the whole textfield node is reduced to its attributes
        !            62:     h.TableElement table = new h.TableElement();
        !            63:     table.classes.add('expand');
        !            64:     table.id = id;
        !            65:     for (x.Element refAttr in attRefs) {
        !            66:       String name = doc.cfg.attributeQualifiedName(ref, refAttr);
        !            67:       if (simpleUIAttributes.contains(name)) {
        !            68:         h.TableRowElement tr = attributeHTML(refAttr);
        !            69:         table.append(tr);
        !            70:       }
        !            71:     }
        !            72:     return(table);
        !            73:   }
        !            74:   
        !            75:   @override
        !            76:   void updateAttributes() {
        !            77:     if (!simpleUI) {
        !            78:       super.updateAttributes();
        !            79:       return;
        !            80:     }
        !            81:     parent.updateHTML();
        !            82:   }
        !            83: }