live-page-code/index.html at master · Dither/live-page-code · GitHub

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<!DOCTYPE html><html><head><title>Live Page Code [background]</title>
<script>
window.addEventListener('load', function () {
if (typeof widget === 'undefined' || !widget.preferences) { storage = window.opera.scriptStorage; }
else { storage = widget.preferences; }

var v12 = (typeof opera.extension.tabGroups !== 'undefined');

function s2b(s) { return s ===  'true' ? true : false; }
function log(){ if (s2b(storage['debugmode'])) opera.postError('[LivePageCode]: ' + Array.prototype.slice.call(arguments)); }

var button = opera.contexts.toolbar.createItem({
    disabled: true,
    title: 'Save live page code',
    icon: 'icons/icon16.png',
    onclick: function () {
        var atab, aport;
        log('toolbar button clicked.');
        try { aport = atab = opera.extension.tabs.getFocused(); } catch (e) {log('active tab not found.');}
        if (!atab) return;
        if (v12) aport = atab.port;
        aport.postMessage({
            type: 'save-snapshot',
            url: atab.url,
            images: s2b(storage['saveimages']) || false,
            b64: s2b(storage['encodeb64']) || true,
            debug: s2b(storage['debugmode']) || false,
        });
    }
});

opera.contexts.toolbar.addItem(button);

function toggleButton (e) {
    var atab = opera.extension.tabs.getFocused();
    button.disabled = v12 ? !atab.port : !atab;
}

function setButtonState (port, state) {
    if (v12) {
        // in case source tab is active
        if (port === opera.extension.tabs.getFocused().port) {
            button.disabled = !state;
        }
    }
}

opera.extension.onconnect = function (e) {
    setButtonState(e.source, false)
};

opera.extension.onmessage = function (e) {
    if (e.data.type === 'status_enabled') setButtonState(e.source, true);
};

opera.extension.tabs.onfocus = toggleButton;

}, false);
</script>
</head>
</html>